ASTROSAT CZTI

Data Quality Report

Orbit 58343

Creation date: 2026-07-10T19:23:14.121580
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_58343cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58343cztM0_level2_quad_clean.evt
Size (bytes)567,714,240100,054,080
Size541.4 MB 95.4 MB
Events in quadrant A3,461,218672,790
Events in quadrant B6,716,362692,397
Events in quadrant C5,816,715567,547
Events in quadrant D4,468,478600,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153790
B0248850
C0225027
D0179660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7122200.280820%
B71224286.009548%
C712297213.647852%
D71221261.769166%

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 7122 7122 22 22 0.31% 0.31%
B 7122 7122 290 290 4.07% 4.07%
C 7121 7121 852 852 11.96% 11.96%
D 7122 7122 129 129 1.81% 1.81%

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 8 246 121562 629.46 772 752 191.9
A 10 251 92571 478.41 772 752 191.9
A 2 143 61699 317.55 772 752 191.9
B 10 128 2416168 14980.04 752 724 161.2
B 5 185 327112 2024.19 752 724 161.2
B 3 238 238008 1471.58 752 724 161.2
C 15 148 1984142 10396.47 693 685 190.8
C 6 223 406579 2127.53 693 685 190.8
C 15 147 201106 1050.52 693 685 190.8
D 13 138 279026 1314.81 747 713 211.7
D 11 129 259057 1220.48 747 713 211.7
D 2 31 212321 999.69 747 713 211.7

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