ASTROSAT CZTI

Data Quality Report

Orbit 55082

Creation date: 2025-12-03T10:40:13.557920
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_025T01_9000006530_55082cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55082cztM0_level2_quad_clean.evt
Size (bytes)410,878,080102,366,720
Size391.8 MB 97.6 MB
Events in quadrant A2,989,414680,909
Events in quadrant B3,099,539744,797
Events in quadrant C3,174,481648,410
Events in quadrant D5,417,179552,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171703216
B0157671644
C0162611653
D0233282364

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015418
B015418
C015315
D015418

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771340.502141%
B6796681.000589%
C6799781.147228%
D67956429.448124%

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 41994 6793 4 4 0.01% 0.06%
B 41912 6832 9 9 0.02% 0.13%
C 41975 6837 57 57 0.14% 0.83%
D 41948 6827 620 620 1.48% 9.08%

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 8 10 34550 181.84 747 727 186.0
A 13 254 20274 105.09 747 727 186.0
A 4 3 18758 96.94 747 727 186.0
B 10 247 52650 322.1 748 721 161.2
B 5 185 30016 181.71 748 721 161.2
B 0 216 26115 157.51 748 721 161.2
C 14 254 104897 519.28 729 723 200.6
C 13 3 87644 433.28 729 723 200.6
C 6 223 65658 323.69 729 723 200.6
D 15 94 1621389 8328.49 686 656 194.6
D 11 129 290840 1491.17 686 656 194.6
D 2 249 225191 1153.82 686 656 194.6

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