ASTROSAT CZTI

Data Quality Report

Orbit 53992

Creation date: 2025-09-22T18:32:42.688392
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/AS1A14_041T01_9000006510_53992cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53992cztM0_level2_quad_clean.evt
Size (bytes)639,639,36075,179,520
Size610.0 MB 71.7 MB
Events in quadrant A2,978,998577,837
Events in quadrant B3,650,959620,605
Events in quadrant C3,367,055548,511
Events in quadrant D13,228,754123,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130811
B0150795
C0141281
D0432581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58051252.153316%
B58042153.704342%
C58041332.291523%
D5805453978.191214%

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 6990 5806 120 120 1.72% 2.07%
B 6989 5805 135 135 1.93% 2.33%
C 6989 5805 105 105 1.50% 1.81%
D 6990 5805 4384 4384 62.72% 75.52%

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 485499 3147.33 613 597 154.1
A 14 239 24537 155.39 613 597 154.1
A 10 253 20378 128.39 613 597 154.1
B 0 213 421998 3194.78 613 591 131.9
B 0 155 201183 1520.73 613 591 131.9
B 4 81 137075 1034.72 613 591 131.9
C 14 80 275572 1655.43 606 602 166.1
C 13 3 209250 1256.15 606 602 166.1
C 15 233 93164 557.26 606 602 166.1
D 8 176 10697522 137338.95 270 257 77.9
D 2 172 552102 7084.97 270 257 77.9
D 2 165 243673 3125.14 270 257 77.9

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