ASTROSAT CZTI

Data Quality Report

Orbit 31457

Creation date: 2024-06-27T20:28:44.766079
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/AS1T04_029T01_9000004582_31457cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31457cztM0_level2_quad_clean.evt
Size (bytes)552,012,48072,861,120
Size526.4 MB 69.5 MB
Events in quadrant A3,412,083446,805
Events in quadrant B5,424,717445,736
Events in quadrant C3,737,250422,057
Events in quadrant D3,685,536420,136

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141392
B0207703
C0150012
D0150142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67571532.264318%
B67572503.699867%
C67572774.099452%
D67571151.701939%

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 7557 6757 0 0 0.00% 0.00%
B 7557 6757 3 3 0.04% 0.04%
C 7557 6757 56 56 0.74% 0.83%
D 7557 6757 1 1 0.01% 0.01%

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 11180 58.03 884 867 177.7
A 3 137 9175 46.74 884 867 177.7
A 0 226 7487 37.25 884 867 177.7
B 6 159 1911474 11387.35 868 847 167.8
B 12 1 40828 238.29 868 847 167.8
B 0 190 39464 230.16 868 847 167.8
C 0 10 263415 1333.87 832 840 196.9
C 14 238 134162 677.27 832 840 196.9
C 3 233 48802 243.64 832 840 196.9
D 8 195 446414 2230.79 850 829 199.7
D 2 234 23638 114.19 850 829 199.7
D 5 233 22706 109.53 850 829 199.7

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