ASTROSAT CZTI

Data Quality Report

Orbit 44877

Creation date: 2024-06-27T23:08:29.710737
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/AS1A13_042T03_9000006030_44877cztM0_level2.fits modeM0/AS1A13_042T03_9000006030_44877cztM0_level2_quad_clean.evt
Size (bytes)528,641,280113,463,360
Size504.2 MB 108.2 MB
Events in quadrant A5,550,266764,786
Events in quadrant B4,050,838780,525
Events in quadrant C3,258,396761,073
Events in quadrant D6,178,318652,417

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218232
B0163822
C0143692
D0229662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68441912.790766%
B68442303.360608%
C6844691.008182%
D68446839.979544%

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 7904 6845 14 14 0.18% 0.20%
B 7904 6845 99 99 1.25% 1.45%
C 7904 6845 11 11 0.14% 0.16%
D 7904 6845 520 520 6.58% 7.60%

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 10 83 2332842 13920.86 806 788 167.5
A 7 3 41419 242.54 806 788 167.5
A 13 248 39632 231.87 806 788 167.5
B 3 112 240263 1512.67 794 770 158.3
B 5 255 212150 1335.1 794 770 158.3
B 0 183 184785 1162.26 794 770 158.3
C 1 3 102037 548.29 792 798 184.6
C 11 16 29060 153.06 792 798 184.6
C 12 250 20752 108.07 792 798 184.6
D 1 52 1474315 7522.07 773 750 195.9
D 13 249 843006 4299.44 773 750 195.9
D 5 171 419763 2138.92 773 750 195.9

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