ASTROSAT CZTI

Data Quality Report

Orbit 59128

Creation date: 2026-09-01T15:15:55.109971
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/AS1T05_264T01_9000006602_59128cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59128cztM0_level2_quad_clean.evt
Size (bytes)705,006,720103,011,840
Size672.3 MB 98.2 MB
Events in quadrant A3,638,697722,004
Events in quadrant B4,375,718780,156
Events in quadrant C4,851,397715,959
Events in quadrant D12,631,557363,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162390
B0183220
C0195760
D0428110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7728220.284679%
B77272703.494241%
C7727400.517665%
D7727364947.224020%

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 7728 7728 12 12 0.16% 0.16%
B 7727 7727 154 154 1.99% 1.99%
C 7727 7727 34 34 0.44% 0.44%
D 7727 7727 2925 2925 37.85% 37.85%

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 187411 896.95 851 829 208.0
A 10 251 93695 446.43 851 829 208.0
A 13 248 33877 158.87 851 829 208.0
B 5 185 642678 3505.76 845 814 183.1
B 4 201 156201 848.7 845 814 183.1
B 4 236 75922 410.23 845 814 183.1
C 3 233 1224053 5345.68 834 829 228.8
C 5 250 206285 897.87 834 829 228.8
C 12 252 88069 381.25 834 829 228.8
D 12 1 7778055 49385.73 553 527 157.5
D 12 110 2221106 14100.23 553 527 157.5
D 6 239 219061 1387.65 553 527 157.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct