ASTROSAT CZTI

Data Quality Report

Orbit 43782

Creation date: 2024-06-27T22:55:43.651441
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/AS1A13_026T01_9000005904_43782cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43782cztM0_level2_quad_clean.evt
Size (bytes)829,365,120104,088,960
Size790.9 MB 99.3 MB
Events in quadrant A6,231,302734,432
Events in quadrant B6,505,777708,455
Events in quadrant C4,765,255769,829
Events in quadrant D12,643,355439,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236586
B0241881
C0191031
D04254021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A716972410.099038%
B7171113915.883419%
C71713404.741319%
D7167319944.635133%

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 7211 7170 497 497 6.89% 6.93%
B 7211 7172 562 562 7.79% 7.84%
C 7211 7172 230 230 3.19% 3.21%
D 7211 7171 2852 2852 39.55% 39.77%

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 15 223 1712993 10248.99 798 782 167.1
A 10 83 993956 5944.96 798 782 167.1
A 13 248 278837 1664.39 798 782 167.1
B 0 200 1405667 8848.45 799 776 158.8
B 5 235 916613 5768.23 799 776 158.8
B 5 172 221283 1388.82 799 776 158.8
C 15 158 701253 3661.73 810 814 191.3
C 14 254 279949 1459.25 810 814 191.3
C 15 174 231285 1204.85 810 814 191.3
D 12 33 5724045 31852.73 692 668 179.7
D 5 235 1577973 8778.29 692 668 179.7
D 1 52 836824 4653.52 692 668 179.7

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