ASTROSAT CZTI

Data Quality Report

Orbit 58235

Creation date: 2026-07-03T13:44:20.242024
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_044T03_9000006588_58235cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58235cztM0_level2_quad_clean.evt
Size (bytes)485,524,80096,255,360
Size463.0 MB 91.8 MB
Events in quadrant A3,529,236633,110
Events in quadrant B5,968,725633,418
Events in quadrant C3,010,374626,724
Events in quadrant D4,962,531570,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150042
B0221082
C0135892
D0191672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64582483.840198%
B645887913.611025%
C6458550.851657%
D64572654.104073%

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 7588 6459 164 164 2.16% 2.54%
B 7588 6459 487 487 6.42% 7.54%
C 7588 6459 18 18 0.24% 0.28%
D 7587 6458 178 178 2.35% 2.76%

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 4 249 574988 3190.47 730 710 180.0
A 3 14 31823 172.85 730 710 180.0
A 13 248 27896 151.04 730 710 180.0
B 2 249 2217163 14722.86 700 674 150.5
B 10 128 371586 2463.76 700 674 150.5
B 0 171 159504 1055.02 700 674 150.5
C 12 252 96527 487.57 712 706 196.5
C 6 223 71226 358.83 712 706 196.5
C 1 27 19759 96.95 712 706 196.5
D 12 110 1299477 6550.91 701 673 198.3
D 8 160 286150 1439.89 701 673 198.3
D 6 239 152616 766.37 701 673 198.3

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