ASTROSAT CZTI

Data Quality Report

Orbit 58260

Creation date: 2026-07-05T06:57:24.457601
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_044T03_9000006588_58260cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58260cztM0_level2_quad_clean.evt
Size (bytes)2,254,357,440310,867,200
Size2.1 GB 296.5 MB
Events in quadrant A15,332,5042,186,592
Events in quadrant B31,745,1711,502,922
Events in quadrant C12,010,8982,163,192
Events in quadrant D22,491,1311,892,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0634625
B01110175
C0542175
D0837256

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2420714145.841286%
B24208803733.199769%
C242083001.239260%
D2420722519.298963%

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 26042 24212 1014 1014 3.89% 4.19%
B 26043 24212 6039 6039 23.19% 24.94%
C 26043 24213 231 231 0.89% 0.95%
D 26042 24212 2257 2257 8.67% 9.32%

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 4 238 2945619 4697.72 2501 2435 626.5
A 10 251 787029 1252.32 2501 2435 626.5
A 7 64 730336 1161.83 2501 2435 626.5
B 4 206 13033180 29322.82 2097 2021 444.4
B 6 255 6048448 13605.72 2097 2021 444.4
B 2 249 1726173 3879.7 2097 2021 444.4
C 6 223 646443 947.76 2477 2456 679.5
C 12 249 488907 715.91 2477 2456 679.5
C 12 252 218470 317.91 2477 2456 679.5
D 12 110 9043279 13053.85 2411 2298 692.6
D 8 160 833807 1200.58 2411 2298 692.6
D 3 12 450189 646.69 2411 2298 692.6

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