ASTROSAT CZTI

Data Quality Report

Orbit 31582

Creation date: 2024-06-27T20:30:13.363637
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/AS1A10_094T72_9000004604_31582cztM0_level2.evt modeM0/AS1A10_094T72_9000004604_31582cztM0_level2_quad_clean.evt
Size (bytes)623,594,880133,122,240
Size594.7 MB 127.0 MB
Events in quadrant A3,201,081946,139
Events in quadrant B5,722,708917,558
Events in quadrant C3,478,031908,115
Events in quadrant D6,045,987808,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137942
B0217162
C0144442
D0225762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470310.479134%
B64703465.347759%
C64701171.808346%
D647085513.214838%

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 7645 6470 0 0 0.00% 0.00%
B 7645 6470 195 195 2.55% 3.01%
C 7645 6470 30 30 0.39% 0.46%
D 7645 6470 765 765 10.01% 11.82%

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 13 254 12166 68.96 830 814 164.6
A 3 137 7898 43.04 830 814 164.6
A 0 226 6922 37.11 830 814 164.6
B 6 159 1814790 12217.31 800 782 148.5
B 5 172 393326 2643.78 800 782 148.5
B 4 80 193663 1299.05 800 782 148.5
C 14 238 130935 716.71 786 791 181.6
C 15 208 75108 409.27 786 791 181.6
C 4 175 64552 351.14 786 791 181.6
D 12 218 1520204 8846.52 732 714 171.8
D 8 195 777702 4523.65 732 714 171.8
D 12 233 628308 3653.87 732 714 171.8

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