ASTROSAT CZTI

Data Quality Report

Orbit 34837

Creation date: 2022-03-09T00:19:48.271390
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/AS1C07_005T01_9000004992_34837cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34837cztM0_level2_quad_clean.evt
Size (bytes)730,319,04085,959,360
Size696.5 MB 82.0 MB
Events in quadrant A3,547,584611,567
Events in quadrant B11,391,553411,237
Events in quadrant C3,006,013604,585
Events in quadrant D3,797,003585,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143573
B0375452
C0123402
D0150162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55412584.656199%
B5541434578.415448%
C55411272.292005%
D5541921.660350%

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 7183 5542 202 202 2.81% 3.64%
B 7182 5541 3997 3997 55.65% 72.13%
C 7183 5542 100 100 1.39% 1.80%
D 7183 5542 102 102 1.42% 1.84%

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 15 169 753820 6001.23 623 611 125.5
A 15 174 281608 2238.86 623 611 125.5
A 10 83 52528 413.65 623 611 125.5
B 5 31 3041454 36981.53 427 417 82.2
B 5 15 3033778 36888.19 427 417 82.2
B 5 14 2979184 36224.28 427 417 82.2
C 0 10 337679 2411.72 602 604 139.8
C 15 214 250366 1787.01 602 604 139.8
C 15 159 15323 105.31 602 604 139.8
D 8 195 625677 4182.95 605 585 149.4
D 12 227 347517 2321.58 605 585 149.4
D 1 52 110458 735.24 605 585 149.4

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