ASTROSAT CZTI

Data Quality Report

Orbit 54796

Creation date: 2025-11-14T03:58:31.652844
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_103T01_9000006524_54796cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54796cztM0_level2_quad_clean.evt
Size (bytes)532,442,880114,310,080
Size507.8 MB 109.0 MB
Events in quadrant A3,495,847752,749
Events in quadrant B3,984,882796,006
Events in quadrant C6,662,096695,393
Events in quadrant D4,957,957672,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168817
B01776910
C0254497
D0206494

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78381391.773412%
B78352312.948309%
C78384595.856086%
D78402803.571429%

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 8468 7843 24 24 0.28% 0.31%
B 8467 7840 62 62 0.73% 0.79%
C 8467 7841 345 345 4.07% 4.40%
D 8467 7843 245 245 2.89% 3.12%

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 5 240 74337 343.83 849 827 213.8
A 12 15 69697 322.12 849 827 213.8
A 3 14 22904 103.26 849 827 213.8
B 5 185 302502 1661.15 834 802 181.6
B 2 249 235549 1292.51 834 802 181.6
B 10 247 96869 528.94 834 802 181.6
C 9 38 2959353 13221.52 808 800 223.8
C 6 223 196993 876.77 808 800 223.8
C 13 3 117459 521.34 808 800 223.8
D 3 12 1212210 5201.3 814 779 232.9
D 14 52 108599 462.93 814 779 232.9
D 5 173 68115 289.11 814 779 232.9

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