ASTROSAT CZTI

Data Quality Report

Orbit 56390

Creation date: 2026-03-01T09:59:28.639023
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_083T05_9000006554_56390cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56390cztM0_level2_quad_clean.evt
Size (bytes)845,297,28074,943,360
Size806.1 MB 71.5 MB
Events in quadrant A9,101,116447,411
Events in quadrant B5,189,967637,269
Events in quadrant C4,057,947579,189
Events in quadrant D12,445,808159,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313914
B0197551
C0166161
D0414221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391200231.325301%
B639167710.593021%
C63923355.240926%
D6392465672.841051%

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 7586 6392 1894 1894 24.97% 29.63%
B 7586 6392 383 383 5.05% 5.99%
C 7587 6393 245 245 3.23% 3.83%
D 7587 6392 3321 3321 43.77% 51.96%

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 95 2830559 19261.06 584 569 146.9
A 12 3 2238561 15231.89 584 569 146.9
A 3 79 1065335 7246.85 584 569 146.9
B 4 206 1841659 13136.41 666 641 140.1
B 5 172 360484 2567.63 666 641 140.1
B 8 128 67741 478.79 666 641 140.1
C 15 230 498450 2733.82 667 660 182.1
C 12 249 303398 1662.61 667 660 182.1
C 13 3 195327 1069.09 667 660 182.1
D 8 129 10851871 126632.56 301 288 85.7
D 2 249 132510 1542.96 301 288 85.7
D 12 3 94306 1097.14 301 288 85.7

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