ASTROSAT CZTI

Data Quality Report

Orbit 20210314_A10_073T07_9000004254_level2

Creation date: 2025-12-23T10:21:01.029011
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/AS1A10_073T07_9000004254cztM0_level2.fits modeM0/AS1A10_073T07_9000004254cztM0_level2_quad_clean.evt
Size (bytes)759,070,080521,997,120
Size723.9 MB 497.8 MB
Events in quadrant A6,080,7653,206,862
Events in quadrant B5,796,6703,478,030
Events in quadrant C2,889,3721,917,788
Events in quadrant D3,478,7742,470,680

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019980
B024960
C024900
D024960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B01940
C02030
D01940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01529560
B01565660
C01585080
D04039560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A725487020.967635%
B7246410161.402076%
C7247620552.835421%
D711111766224.837226%

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 133943 75288 0 0 0.00% 0.00%
B 133583 75164 0 0 0.00% 0.00%
C 64805 46757 0 0 0.00% 0.00%
D 133583 71287 0 0 0.00% 0.00%

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 0 29 3833 6.67 1596 1532 344.9
A 7 110 3752 6.43 1596 1532 344.9
A 12 254 3668 6.19 1596 1532 344.9
B 2 9 3721 8.3 1544 1486 269.4
B 5 232 3393 7.08 1544 1486 269.4
B 5 225 3166 6.24 1544 1486 269.4
C 1 81 2332 8.22 762 714 196.7
C 1 80 2252 7.82 762 714 196.7
C 3 126 2005 6.56 762 714 196.7
D 15 46 2647 6.61 993 907 263.3
D 6 67 2490 6.01 993 907 263.3
D 7 3 2473 5.95 993 907 263.3

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