ASTROSAT CZTI

Data Quality Report

Orbit 53628

Creation date: 2025-08-27T12:46:53.650263
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/AS1A14_004T05_9000006502_53628cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53628cztM0_level2_quad_clean.evt
Size (bytes)871,778,88083,234,880
Size831.4 MB 79.4 MB
Events in quadrant A8,019,517533,523
Events in quadrant B5,319,896650,441
Events in quadrant C9,910,299419,677
Events in quadrant D8,512,510457,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283412
B0202792
C0339473
D0298962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6583150422.846726%
B65846089.234508%
C6583243336.958833%
D6583164024.912654%

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 7678 6587 1406 1406 18.31% 21.35%
B 7679 6588 402 402 5.24% 6.10%
C 7678 6587 2354 2354 30.66% 35.74%
D 7678 6587 1699 1699 22.13% 25.79%

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 4 95 3869382 23109.16 683 669 167.4
A 15 174 788722 4707.31 683 669 167.4
A 3 63 239244 1425.09 683 669 167.4
B 15 20 828164 5529.02 696 673 149.7
B 4 206 780275 5209.04 696 673 149.7
B 10 254 332530 2217.35 696 673 149.7
C 1 241 3814593 24339.14 570 568 156.7
C 15 224 3004976 19172.58 570 568 156.7
C 7 80 223278 1421.22 570 568 156.7
D 8 176 4599440 25588.65 626 599 179.7
D 2 153 399424 2219.12 626 599 179.7
D 10 172 328051 1821.99 626 599 179.7

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