ASTROSAT CZTI

Data Quality Report

Orbit 20021

Creation date: 2024-06-27T18:10:11.902255
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/AS1C04_001T01_9000002984_20021cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20021cztM0_level2_quad_clean.evt
Size (bytes)599,578,560109,797,120
Size571.8 MB 104.7 MB
Events in quadrant A5,028,067719,825
Events in quadrant B3,471,621734,843
Events in quadrant C3,338,501727,597
Events in quadrant D5,862,993672,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192631
B0146821
C0142022
D0220471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67434276.332493%
B6744851.260380%
C6743941.394038%
D674385212.635326%

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 7488 6744 346 346 4.62% 5.13%
B 7489 6745 9 9 0.12% 0.13%
C 7488 6744 0 0 0.00% 0.00%
D 7488 6744 819 819 10.94% 12.14%

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 14 238 1584215 9949.1 790 773 159.2
A 14 254 296132 1855.8 790 773 159.2
A 5 16 95079 592.54 790 773 159.2
B 0 189 120733 795.76 806 786 150.7
B 7 220 63297 414.71 806 786 150.7
B 0 197 45862 299.05 806 786 150.7
C 14 238 122085 666.84 787 793 181.9
C 3 233 90303 492.11 787 793 181.9
C 0 207 52879 286.36 787 793 181.9
D 7 38 1231065 6583.39 771 750 186.9
D 7 238 940253 5027.26 771 750 186.9
D 12 218 298815 1594.94 771 750 186.9

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