ASTROSAT CZTI

Data Quality Report

Orbit 48475

Creation date: 2024-09-14T11:08:17.831982
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_081T01_9000006428_48475cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48475cztM0_level2_quad_clean.evt
Size (bytes)430,551,36097,001,280
Size410.6 MB 92.5 MB
Events in quadrant A6,043,521646,736
Events in quadrant B2,633,989680,125
Events in quadrant C2,518,020646,124
Events in quadrant D4,267,286538,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222931
B0124501
C0123721
D0175171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61071422.325201%
B6108390.638507%
C6108120.196464%
D610861210.019646%

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 7262 6107 28 28 0.39% 0.46%
B 7263 6109 5 5 0.07% 0.08%
C 7263 6109 0 0 0.00% 0.00%
D 7262 6108 600 600 8.26% 9.82%

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 3536586 26346.25 646 633 134.2
A 13 254 10841 76.06 646 633 134.2
A 0 31 8090 55.56 646 633 134.2
B 8 234 49394 385.64 650 630 126.4
B 12 111 16256 123.57 650 630 126.4
B 11 111 14991 113.57 650 630 126.4
C 3 233 12904 82.73 634 637 148.3
C 12 2 11138 70.82 634 637 148.3
C 14 254 10559 66.91 634 637 148.3
D 7 38 1094349 7341.92 598 579 149.0
D 2 165 764414 5127.23 598 579 149.0
D 2 234 27326 179.54 598 579 149.0

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