ASTROSAT CZTI

Data Quality Report

Orbit 57189

Creation date: 2026-04-24T03:33:15.205569
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_070T08_9000006568_57189cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57189cztM0_level2_quad_clean.evt
Size (bytes)402,528,96093,732,480
Size383.9 MB 89.4 MB
Events in quadrant A2,743,885631,082
Events in quadrant B3,759,465645,447
Events in quadrant C4,367,952574,237
Events in quadrant D3,540,981550,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128732
B0156002
C0173952
D0151542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6272240.382653%
B62723425.452806%
C62722824.496173%
D6272791.259566%

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 7472 6273 10 10 0.13% 0.16%
B 7472 6273 247 247 3.31% 3.94%
C 7472 6273 254 254 3.40% 4.05%
D 7472 6273 77 77 1.03% 1.23%

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 14 34796 204.16 676 660 167.2
A 13 248 30798 180.24 676 660 167.2
A 4 3 25993 151.51 676 660 167.2
B 5 185 481094 3434.77 655 632 139.9
B 10 16 389438 2779.53 655 632 139.9
B 0 199 76220 540.37 655 632 139.9
C 15 224 1444587 8242.37 637 633 175.2
C 2 12 126873 720.6 637 633 175.2
C 13 16 57995 327.43 637 633 175.2
D 12 33 403790 2199.59 641 611 183.3
D 2 249 206447 1122.96 641 611 183.3
D 7 96 156378 849.8 641 611 183.3

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