ASTROSAT CZTI

Data Quality Report

Orbit 53397

Creation date: 2025-08-11T23:10:37.158767
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_011T09_9000006494_53397cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53397cztM0_level2_quad_clean.evt
Size (bytes)696,381,12079,096,320
Size664.1 MB 75.4 MB
Events in quadrant A4,411,878570,914
Events in quadrant B5,202,585584,076
Events in quadrant C10,720,693312,128
Events in quadrant D4,985,197514,962

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172341
B0195431
C0359351
D0189011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59053836.486029%
B590667311.395191%
C5906299250.660345%
D59063475.875381%

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 7065 5906 295 295 4.18% 4.99%
B 7066 5906 401 401 5.68% 6.79%
C 7066 5907 2595 2595 36.73% 43.93%
D 7066 5906 278 278 3.93% 4.71%

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 1089179 7150.54 620 605 152.2
A 3 63 242833 1591.13 620 605 152.2
A 4 249 153967 1007.39 620 605 152.2
B 4 171 1176823 9340.6 602 583 125.9
B 2 249 923039 7325.28 602 583 125.9
B 4 206 120144 949.44 602 583 125.9
C 15 178 5665090 41953.07 492 487 135.0
C 15 224 1347360 9975.19 492 487 135.0
C 1 241 308564 2281.67 492 487 135.0
D 0 18 1284070 7444.76 608 582 172.4
D 3 12 351468 2035.28 608 582 172.4
D 8 176 298750 1729.5 608 582 172.4

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