ASTROSAT CZTI

Data Quality Report

Orbit 53459

Creation date: 2025-08-16T04:07:56.353035
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_002T06_9000006496_53459cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53459cztM0_level2_quad_clean.evt
Size (bytes)844,470,72086,137,920
Size805.4 MB 82.1 MB
Events in quadrant A4,752,094661,756
Events in quadrant B4,714,537722,018
Events in quadrant C17,233,140121,671
Events in quadrant D4,011,597610,157

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190912
B0187692
C0560182
D0171832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70684386.196944%
B70673585.065799%
C7068595484.238823%
D70681331.881720%

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 7493 7070 341 341 4.55% 4.82%
B 7492 7069 164 164 2.19% 2.32%
C 7492 7067 5695 5695 76.01% 80.59%
D 7493 7070 103 103 1.37% 1.46%

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 15 174 696468 3708.76 754 735 187.6
A 3 63 578783 3081.41 754 735 187.6
A 8 249 375191 1996.12 754 735 187.6
B 4 171 479417 2975.66 754 727 160.9
B 7 0 318288 1974.04 754 727 160.9
B 2 249 275140 1705.82 754 727 160.9
C 1 241 9542652 99843.37 347 343 95.6
C 15 178 2949377 30856.42 347 343 95.6
C 4 5 1036105 10837.42 347 343 95.6
D 8 176 232633 1095.26 745 711 211.7
D 3 12 195255 918.74 745 711 211.7
D 13 153 156779 737.04 745 711 211.7

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