ASTROSAT CZTI

Data Quality Report

Orbit 02279

Creation date: 2024-06-27T14:15:36.037085
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/AS1T01_058T01_9000000348_02279cztM0_level2.evt modeM0/AS1T01_058T01_9000000348_02279cztM0_level2_quad_clean.evt
Size (bytes)411,474,24086,754,240
Size392.4 MB 82.7 MB
Events in quadrant A2,939,941528,212
Events in quadrant B3,013,541536,058
Events in quadrant C3,159,079546,874
Events in quadrant D2,878,634534,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139261
B0140541
C0142021
D0140241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6909160.231582%
B6909100.144739%
C690970.101317%
D690950.072369%

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 7449 6909 0 0 0.00% 0.00%
B 7449 6910 2 2 0.03% 0.03%
C 7449 6910 1 1 0.01% 0.01%
D 7449 6910 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 12 194 8436 49.03 763 745 156.9
A 0 226 8097 46.87 763 745 156.9
A 13 9 1994 7.96 763 745 156.9
B 4 185 13345 84.47 772 753 149.1
B 3 0 12714 80.24 772 753 149.1
B 12 111 11961 75.18 772 753 149.1
C 5 234 155147 873.49 751 754 176.8
C 2 53 46781 260.4 751 754 176.8
C 10 34 9891 51.69 751 754 176.8
D 13 169 33895 189.54 738 721 175.0
D 9 64 26006 144.47 738 721 175.0
D 5 233 13704 74.18 738 721 175.0

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