ASTROSAT CZTI

Data Quality Report

Orbit 58690

Creation date: 2026-08-03T14:12:49.885004
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_004T06_9000006594_58690cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58690cztM0_level2_quad_clean.evt
Size (bytes)741,081,60092,589,120
Size706.8 MB 88.3 MB
Events in quadrant A3,235,501696,723
Events in quadrant B6,857,015638,523
Events in quadrant C5,314,303636,677
Events in quadrant D11,473,860335,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01492924
B02532216
C0208606
D03904543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7113490.688880%
B7115117916.570625%
C71175307.446958%
D7112350049.212598%

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 7644 7120 6 6 0.08% 0.08%
B 7644 7119 831 831 10.87% 11.67%
C 7644 7120 384 384 5.02% 5.39%
D 7644 7118 2682 2682 35.09% 37.68%

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 10 251 92276 470.9 785 765 194.3
A 3 14 50433 255.59 785 765 194.3
A 10 17 16626 81.62 785 765 194.3
B 2 249 3082119 19715.86 728 699 156.3
B 6 255 322323 2057.85 728 699 156.3
B 5 172 143818 915.72 728 699 156.3
C 2 12 1282742 6206.48 748 741 206.6
C 13 3 665361 3217.59 748 741 206.6
C 14 254 130334 627.39 748 741 206.6
D 11 129 7915105 52853.75 522 497 149.7
D 8 240 944151 6301.72 522 497 149.7
D 1 27 190674 1270.0 522 497 149.7

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