ASTROSAT CZTI

Data Quality Report

Orbit 52918

Creation date: 2025-07-16T23:05:20.949281
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/AS1C09_011T06_9000006484_52918cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52918cztM0_level2_quad_clean.evt
Size (bytes)896,241,60073,232,640
Size854.7 MB 69.8 MB
Events in quadrant A15,410,44870,834
Events in quadrant B3,696,518659,721
Events in quadrant C5,235,411554,013
Events in quadrant D8,344,273491,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501481
B0154361
C0199674
D0292675

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01282
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6327572790.516833%
B63272353.714241%
C63276009.483167%
D6327114818.144460%

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 7452 6328 5236 5236 70.26% 82.74%
B 7452 6328 49 49 0.66% 0.77%
C 7453 6329 545 545 7.31% 8.61%
D 7453 6329 1027 1027 13.78% 16.23%

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 9 191 13764529 179636.16 305 298 76.6
A 15 174 143381 1867.37 305 298 76.6
A 0 8 79270 1030.66 305 298 76.6
B 10 254 257636 1826.25 667 645 140.7
B 7 0 186714 1322.26 667 645 140.7
B 5 172 147059 1040.46 667 645 140.7
C 7 80 1525432 8764.96 637 630 174.0
C 13 3 593773 3409.54 637 630 174.0
C 2 239 84345 481.22 637 630 174.0
D 15 78 2253524 12622.17 622 593 178.5
D 8 176 1581599 8857.67 622 593 178.5
D 3 224 551150 3084.53 622 593 178.5

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