ASTROSAT CZTI

Data Quality Report

Orbit 20200715_A07_068T01_9000003760_level2

Creation date: 2021-08-31T09:09:45.753281
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_068T01_9000003760cztM0_level2_bc.evt modeM0/AS1A07_068T01_9000003760cztM0_level2_quad_clean.evt
Size (bytes)15,579,650,8805,410,339,200
Size14.5 GB 5.0 GB
Events in quadrant A109,382,91135,066,663
Events in quadrant B86,210,59635,919,707
Events in quadrant C81,630,04234,190,112
Events in quadrant D169,011,03732,931,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08989040
B08040180
C08013720
D011087540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080400
B080400
C080380
D080400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06450
B06450
C06450
D06450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375025178664.763949%
B37499852841.409074%
C37505064441.718171%
D374998274057.308039%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 499203 375098 3566 3566 0.71% 0.95%
B 499204 375151 167 167 0.03% 0.04%
C 499204 375173 7 7 0.00% 0.00%
D 499204 375125 6401 6401 1.28% 1.71%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 27480343 6169.11 20820 20545 4451.2
A 15 169 1033101 227.48 20820 20545 4451.2
A 13 254 514479 110.97 20820 20545 4451.2
B 10 245 2398862 599.96 21127 20674 3963.9
B 0 190 1362274 338.46 21127 20674 3963.9
B 0 229 583778 142.06 21127 20674 3963.9
C 3 233 3397910 725.01 20026 19992 4659.1
C 0 239 538604 111.31 20026 19992 4659.1
C 0 207 480263 98.79 20026 19992 4659.1
D 1 52 73930082 16040.07 20087 19594 4607.9
D 12 2 4929511 1065.55 20087 19594 4607.9
D 12 233 4311937 931.53 20087 19594 4607.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter