ASTROSAT CZTI

Data Quality Report

Orbit 20210304_A10_102T11_9000004220_level2

Creation date: 2021-03-06T12:40:44.884262
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_102T11_9000004220cztM0_level2_bc.evt modeM0/AS1A10_102T11_9000004220cztM0_level2_quad_clean.evt
Size (bytes)488,027,520119,954,880
Size465.4 MB 114.4 MB
Events in quadrant A1,876,110772,260
Events in quadrant B1,995,201785,443
Events in quadrant C2,263,085768,633
Events in quadrant D8,025,872681,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187120
B0192060
C0198550
D0416510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8999350.388932%
B8999790.877875%
C89992252.500278%
D9000234226.022222%

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 9804 8999 3 3 0.03% 0.03%
B 9804 8999 0 0 0.00% 0.00%
C 9804 8999 4 4 0.04% 0.04%
D 9805 8997 247 247 2.52% 2.75%

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 15 174 106587 1045.66 454 445 101.5
A 13 254 17037 163.46 454 445 101.5
A 1 113 9313 87.36 454 445 101.5
B 5 255 110857 1215.46 458 448 90.8
B 0 229 63926 698.81 458 448 90.8
B 0 190 23953 258.76 458 448 90.8
C 10 9 333588 3088.61 443 440 107.9
C 3 233 198109 1832.59 443 440 107.9
C 2 114 17759 160.56 443 440 107.9
D 12 33 4509957 45525.82 410 394 99.1
D 1 52 1218596 12298.23 410 394 99.1
D 8 195 320068 3227.24 410 394 99.1

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