ASTROSAT CZTI

Data Quality Report

Orbit 56929

Creation date: 2026-04-06T16:21:40.351978
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_083T14_9000006564_56929cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56929cztM0_level2_quad_clean.evt
Size (bytes)838,385,28066,680,640
Size799.5 MB 63.6 MB
Events in quadrant A9,276,828379,172
Events in quadrant B4,524,283622,494
Events in quadrant C3,422,961581,557
Events in quadrant D13,330,1955,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318831
B0176531
C0146381
D0438361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172259041.963707%
B61735328.618176%
C61731863.013122%
D6173613299.335817%

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 7292 6172 2458 2458 33.71% 39.83%
B 7293 6174 312 312 4.28% 5.05%
C 7293 6173 127 127 1.74% 2.06%
D 7292 6172 4334 4334 59.43% 70.22%

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 7 64 7137306 55967.26 511 497 127.5
A 10 251 77594 604.6 511 497 127.5
A 3 14 20690 158.35 511 497 127.5
B 5 172 1081144 7959.26 642 620 135.8
B 5 185 360759 2652.82 642 620 135.8
B 10 16 346197 2545.56 642 620 135.8
C 13 3 674685 3778.23 651 642 178.4
C 14 254 64011 355.2 651 642 178.4
C 6 223 42257 233.27 651 642 178.4
D 12 33 11556721 197777.11 199 190 58.4
D 2 249 368659 6305.94 199 190 58.4
D 15 142 140175 2395.69 199 190 58.4

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