ASTROSAT CZTI

Data Quality Report

Orbit 34658

Creation date: 2022-02-24T21:31:57.142601
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/AS1T05_008T01_9000004956_34658cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34658cztM0_level2_quad_clean.evt
Size (bytes)562,530,24068,932,800
Size536.5 MB 65.7 MB
Events in quadrant A2,639,131438,540
Events in quadrant B4,536,937413,133
Events in quadrant C2,996,562436,693
Events in quadrant D6,477,622399,878

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116253
B0171992
C0121822
D0232872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A570370.122742%
B57035058.854989%
C5703470.824128%
D57035539.696651%

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 7136 5704 0 0 0.00% 0.00%
B 7136 5704 344 344 4.82% 6.03%
C 7136 5704 36 36 0.50% 0.63%
D 7136 5704 466 466 6.53% 8.17%

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 49391 359.12 665 650 135.7
A 13 254 10406 71.88 665 650 135.7
A 13 6 10136 69.89 665 650 135.7
B 5 172 1502986 12260.3 638 621 122.5
B 4 81 247135 2011.72 638 621 122.5
B 5 255 131200 1065.61 638 621 122.5
C 15 214 241010 1593.42 642 646 150.8
C 0 10 166272 1097.97 642 646 150.8
C 14 67 63184 414.58 642 646 150.8
D 8 195 2381789 15383.94 625 605 154.8
D 3 13 370602 2390.41 625 605 154.8
D 7 38 292701 1887.12 625 605 154.8

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