ASTROSAT CZTI

Data Quality Report

Orbit 58460

Creation date: 2026-07-18T16:34:12.251368
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_044T04_9000006592_58460cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58460cztM0_level2_quad_clean.evt
Size (bytes)702,489,600114,880,320
Size669.9 MB 109.6 MB
Events in quadrant A4,154,720794,197
Events in quadrant B9,162,536698,170
Events in quadrant C4,790,728744,620
Events in quadrant D7,246,738659,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181930
B0329680
C0202950
D0272850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8371901.075140%
B8372183421.906355%
C83722753.284759%
D837293511.168180%

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 8371 8371 33 33 0.39% 0.39%
B 8372 8372 1405 1405 16.78% 16.78%
C 8372 8372 168 168 2.01% 2.01%
D 8372 8372 695 695 8.30% 8.30%

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 10 17 135342 570.94 943 917 235.4
A 13 248 128954 543.81 943 917 235.4
A 12 80 118382 498.91 943 917 235.4
B 2 249 4264443 23165.02 847 811 184.1
B 5 172 1133270 6152.84 847 811 184.1
B 8 128 120212 648.73 847 811 184.1
C 6 13 871741 3492.81 908 898 249.3
C 14 254 118360 471.12 908 898 249.3
C 1 12 42082 165.18 908 898 249.3
D 8 240 3518453 14146.97 874 835 248.6
D 5 173 79179 315.08 874 835 248.6
D 2 249 64968 257.93 874 835 248.6

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