ASTROSAT CZTI

Data Quality Report

Orbit 22656

Creation date: 2024-06-27T18:44:07.521578
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/AS1A08_007T01_9000003362_22656cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22656cztM0_level2_quad_clean.evt
Size (bytes)532,768,32095,495,040
Size508.1 MB 91.1 MB
Events in quadrant A3,416,435615,516
Events in quadrant B3,745,507618,900
Events in quadrant C3,443,800590,877
Events in quadrant D5,048,379573,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147362
B0156192
C0147352
D0196612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7090861.212976%
B70901422.002821%
C70901071.509168%
D70904115.796897%

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 7670 7091 0 0 0.00% 0.00%
B 7670 7091 28 28 0.37% 0.39%
C 7670 7091 5 5 0.07% 0.07%
D 7670 7091 353 353 4.60% 4.98%

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 3 1 25748 141.36 874 853 176.1
A 4 2 16773 90.39 874 853 176.1
A 13 254 13293 70.63 874 853 176.1
B 0 229 103304 625.11 870 847 163.9
B 7 219 62006 373.14 870 847 163.9
B 0 230 55457 333.19 870 847 163.9
C 14 238 131199 671.6 833 836 194.1
C 10 22 41295 208.44 833 836 194.1
C 0 10 15298 74.51 833 836 194.1
D 1 52 1146741 5672.05 832 808 202.0
D 12 233 449409 2220.45 832 808 202.0
D 2 136 95279 467.6 832 808 202.0

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