ASTROSAT CZTI

Data Quality Report

Orbit 44796

Creation date: 2024-06-27T23:06:40.909210
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_004T13_9000006022_44796cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44796cztM0_level2_quad_clean.evt
Size (bytes)815,771,52095,440,320
Size778.0 MB 91.0 MB
Events in quadrant A11,989,492454,611
Events in quadrant B4,855,817699,129
Events in quadrant C3,050,351742,689
Events in quadrant D9,758,335504,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405101
B0193511
C0143912
D0338201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7016302943.172748%
B70176549.320222%
C7016260.370582%
D7016206529.432725%

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 7551 7016 2748 2748 36.39% 39.17%
B 7552 7017 454 454 6.01% 6.47%
C 7551 7017 2 2 0.03% 0.03%
D 7551 7016 2156 2156 28.55% 30.73%

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 15 223 7619172 57641.62 630 615 132.2
A 10 83 1719776 13007.09 630 615 132.2
A 10 248 158865 1197.31 630 615 132.2
B 0 189 1453280 9814.03 745 722 148.0
B 5 255 115617 776.27 745 722 148.0
B 15 36 77486 518.65 745 722 148.0
C 1 3 27135 146.2 763 767 180.4
C 14 254 18387 97.7 763 767 180.4
C 2 14 15004 78.94 763 767 180.4
D 13 187 5060618 29125.61 687 666 173.7
D 7 96 479495 2756.19 687 666 173.7
D 5 235 408840 2349.49 687 666 173.7

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