ASTROSAT CZTI

Data Quality Report

Orbit 22701

Creation date: 2024-06-27T18:44:36.551006
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_22701cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22701cztM0_level2_quad_clean.evt
Size (bytes)501,275,52099,103,680
Size478.1 MB 94.5 MB
Events in quadrant A3,368,487639,395
Events in quadrant B3,511,513641,921
Events in quadrant C3,423,465611,189
Events in quadrant D4,387,519606,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148091
B0150481
C0148591
D0178001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7218530.734275%
B7218851.177612%
C7219891.232858%
D72181351.870324%

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 7413 7220 0 0 0.00% 0.00%
B 7413 7220 1 1 0.01% 0.01%
C 7414 7221 12 12 0.16% 0.17%
D 7413 7220 79 79 1.07% 1.09%

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 12724 66.59 870 851 178.3
A 0 226 7700 38.42 870 851 178.3
A 3 137 7008 34.53 870 851 178.3
B 0 230 38395 230.28 866 844 163.1
B 0 190 32577 194.6 866 844 163.1
B 0 245 26683 158.46 866 844 163.1
C 14 238 130366 669.36 827 833 193.5
C 10 22 30139 151.44 827 833 193.5
C 10 23 29520 148.24 827 833 193.5
D 1 52 549448 2658.86 839 815 206.3
D 12 233 382381 1849.2 839 815 206.3
D 12 33 108898 523.81 839 815 206.3

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