ASTROSAT CZTI

Data Quality Report

Orbit 55480

Creation date: 2025-12-30T13:58:15.272742
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_099T01_9000006536_55480cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55480cztM0_level2_quad_clean.evt
Size (bytes)607,754,880116,994,240
Size579.6 MB 111.6 MB
Events in quadrant A4,975,190771,640
Events in quadrant B4,031,511836,237
Events in quadrant C4,002,269743,448
Events in quadrant D8,844,924615,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01682
B01682
C01682
D01682

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021025242
B018300247
C018438264
D032293225

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82902312.786490%
B8291730.880473%
C8284580.700145%
D8292126815.291848%

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 8360 8311 202 202 2.42% 2.43%
B 8365 8313 43 43 0.51% 0.52%
C 8345 8312 30 30 0.36% 0.36%
D 8355 8317 1097 1097 13.13% 13.19%

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 0 8 795273 3621.1 887 866 219.4
A 3 78 253799 1152.93 887 866 219.4
A 13 248 177706 806.08 887 866 219.4
B 5 236 246761 1320.02 885 852 186.3
B 10 247 81971 435.44 885 852 186.3
B 7 252 68156 361.28 885 852 186.3
C 13 3 224111 931.98 878 868 239.5
C 9 38 151114 627.24 878 868 239.5
C 15 147 32684 132.82 878 868 239.5
D 11 129 2528547 10872.28 824 786 232.5
D 7 70 1151279 4948.44 824 786 232.5
D 6 239 709475 3048.18 824 786 232.5

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