ASTROSAT CZTI

Data Quality Report

Orbit 53718

Creation date: 2025-09-02T17:27:50.379420
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_022T04_9000006506_53718cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53718cztM0_level2_quad_clean.evt
Size (bytes)1,009,249,92054,645,120
Size962.5 MB 52.1 MB
Events in quadrant A14,304,66672,777
Events in quadrant B2,894,951619,287
Events in quadrant C7,835,696356,415
Events in quadrant D11,864,540190,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466663
B0128451
C0274301
D0393341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5938531389.474571%
B59391592.677218%
C5939238640.175114%
D5939404168.041758%

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 7023 5937 5014 5014 71.39% 84.45%
B 7024 5940 11 11 0.16% 0.19%
C 7024 5937 1148 1148 16.34% 19.34%
D 7024 5940 3277 3277 46.65% 55.17%

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 3 63 10611742 127790.34 329 322 83.0
A 3 78 1846956 22238.49 329 322 83.0
A 8 245 246759 2967.77 329 322 83.0
B 1 223 107441 773.2 640 619 138.2
B 5 185 93897 675.17 640 619 138.2
B 5 32 50071 357.94 640 619 138.2
C 15 224 2955169 21838.61 488 485 135.3
C 15 219 1633711 12071.47 488 485 135.3
C 15 158 402226 2969.34 488 485 135.3
D 2 172 6211538 51246.38 413 393 121.2
D 8 176 2999469 24744.52 413 393 121.2
D 1 241 361507 2979.45 413 393 121.2

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