ASTROSAT CZTI

Data Quality Report

Orbit 23105

Creation date: 2024-06-27T18:49:59.822063
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/AS1A07_138T05_9000003410_23105cztM0_level2.evt modeM0/AS1A07_138T05_9000003410_23105cztM0_level2_quad_clean.evt
Size (bytes)572,889,600103,204,800
Size546.4 MB 98.4 MB
Events in quadrant A3,947,006654,149
Events in quadrant B3,737,302677,507
Events in quadrant C3,834,862651,910
Events in quadrant D5,323,349621,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167012
B0160592
C0164102
D0212352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74861411.883516%
B7486881.175528%
C74861321.763291%
D74864686.251670%

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 7946 7487 94 94 1.18% 1.26%
B 7946 7487 13 13 0.16% 0.17%
C 7946 7487 17 17 0.21% 0.23%
D 7946 7487 310 310 3.90% 4.14%

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 6 16 467092 2538.09 903 882 183.7
A 13 254 11188 56.11 903 882 183.7
A 3 137 8034 38.94 903 882 183.7
B 0 190 65192 364.62 910 887 176.4
B 5 172 27947 153.43 910 887 176.4
B 0 189 25588 140.06 910 887 176.4
C 0 207 280660 1354.57 875 880 206.5
C 14 238 136172 655.02 875 880 206.5
C 13 61 5963 24.61 875 880 206.5
D 13 153 1248801 5919.18 858 835 210.8
D 7 238 630204 2985.14 858 835 210.8
D 1 52 127586 601.19 858 835 210.8

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