ASTROSAT CZTI

Data Quality Report

Orbit 58499

Creation date: 2026-07-21T07:18:43.062681
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_044T04_9000006592_58499cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58499cztM0_level2_quad_clean.evt
Size (bytes)379,785,600100,454,400
Size362.2 MB 95.8 MB
Events in quadrant A3,825,470644,807
Events in quadrant B3,183,117719,071
Events in quadrant C3,238,293633,208
Events in quadrant D3,304,151590,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158812
B0139422
C0142232
D0143383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65182563.927585%
B6519711.089124%
C6519640.981746%
D6518731.119975%

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 9013 6520 187 187 2.07% 2.87%
B 9014 6521 15 15 0.17% 0.23%
C 9014 6521 48 48 0.53% 0.74%
D 9013 6520 46 46 0.51% 0.71%

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 17 719705 3925.9 733 714 183.1
A 10 143 164680 895.3 733 714 183.1
A 13 248 26450 140.53 733 714 183.1
B 2 249 51189 317.57 742 718 158.9
B 4 171 40384 249.58 742 718 158.9
B 12 111 19505 118.21 742 718 158.9
C 13 3 99661 500.87 721 714 197.6
C 4 5 76384 383.04 721 714 197.6
C 12 252 69606 348.73 721 714 197.6
D 2 31 125316 612.91 712 682 203.3
D 3 12 88756 433.12 712 682 203.3
D 5 38 79141 385.84 712 682 203.3

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