ASTROSAT CZTI

Data Quality Report

Orbit 57528

Creation date: 2026-05-16T23:28:37.065656
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_113T09_9000006574_57528cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57528cztM0_level2_quad_clean.evt
Size (bytes)465,091,200103,420,800
Size443.5 MB 98.6 MB
Events in quadrant A4,639,497667,148
Events in quadrant B3,579,379718,575
Events in quadrant C4,524,203638,909
Events in quadrant D3,920,966611,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190172
B0156153
C0185152
D0168502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71042062.899775%
B71041231.731419%
C71042012.829392%
D71041261.773649%

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 7134 7106 10 10 0.14% 0.14%
B 7134 7106 19 19 0.27% 0.27%
C 7134 7106 141 141 1.98% 1.98%
D 7134 7106 110 110 1.54% 1.55%

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 1589730 8450.12 768 749 188.0
A 7 14 25022 129.08 768 749 188.0
A 10 251 22023 113.13 768 749 188.0
B 4 206 233547 1438.09 757 728 161.9
B 10 247 75634 462.68 757 728 161.9
B 0 245 61121 373.04 757 728 161.9
C 15 224 1323587 6553.54 738 732 201.9
C 12 252 167433 825.85 738 732 201.9
C 1 44 44708 217.86 738 732 201.9
D 15 142 442449 2117.46 743 710 208.6
D 3 12 160960 768.15 743 710 208.6
D 8 160 112254 534.68 743 710 208.6

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