ASTROSAT CZTI

Data Quality Report

Orbit 22764

Creation date: 2024-06-27T18:45:23.625381
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/AS1C05_001T01_9000003366_22764cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22764cztM0_level2_quad_clean.evt
Size (bytes)457,338,240133,358,400
Size436.2 MB 127.2 MB
Events in quadrant A3,173,760912,964
Events in quadrant B3,279,653924,926
Events in quadrant C3,261,623881,756
Events in quadrant D3,686,841859,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136302
B0138722
C0138702
D0153692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6608460.696126%
B6608701.059322%
C6608881.331719%
D66081572.375908%

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 7658 6609 0 0 0.00% 0.00%
B 7658 6609 3 3 0.04% 0.05%
C 7658 6609 1 1 0.01% 0.02%
D 7658 6609 93 93 1.21% 1.41%

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 11661 66.65 823 808 162.8
A 0 226 6972 37.85 823 808 162.8
A 3 137 6654 35.9 823 808 162.8
B 0 190 27615 174.93 822 802 153.3
B 0 230 18846 117.72 822 802 153.3
B 12 111 17984 112.1 822 802 153.3
C 14 238 128125 687.61 798 805 185.2
C 10 22 22505 117.19 798 805 185.2
C 13 61 5579 25.78 798 805 185.2
D 12 233 368788 1909.24 799 776 192.8
D 7 238 128963 665.03 799 776 192.8
D 1 52 78702 404.28 799 776 192.8

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