ASTROSAT CZTI

Data Quality Report

Orbit 20220706_A10_073T02_9000005226_level2

Creation date: 2026-01-03T15:55:37.214913
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/AS1A10_073T02_9000005226cztM0_level2.fits modeM0/AS1A10_073T02_9000005226cztM0_level2_quad_clean.evt
Size (bytes)794,816,640755,726,400
Size758.0 MB 720.7 MB
Events in quadrant A5,061,2264,864,061
Events in quadrant B4,461,8904,197,124
Events in quadrant C4,846,0704,589,873
Events in quadrant D3,975,4663,516,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017080
B017080
C017080
D017080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01808370
B02418240
C02024240
D03413170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A833745380.645285%
B83374973711.678701%
C8337422622.713076%
D833741168514.015161%

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 115710 83373 0 0 0.00% 0.00%
B 115710 82058 0 0 0.00% 0.00%
C 115710 83335 0 0 0.00% 0.00%
D 115710 83349 0 0 0.00% 0.00%

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 7 110 4135 8.9 1321 1248 324.3
A 9 19 4020 8.55 1321 1248 324.3
A 0 29 3918 8.23 1321 1248 324.3
B 2 9 3866 12.02 1181 1130 227.7
B 3 80 3537 10.57 1181 1130 227.7
B 5 128 3163 8.93 1181 1130 227.7
C 1 81 3901 8.27 1280 1201 326.5
C 3 202 3822 8.03 1280 1201 326.5
C 1 80 3768 7.86 1280 1201 326.5
D 7 3 2953 6.42 1138 1042 297.5
D 10 189 2952 6.42 1138 1042 297.5
D 6 67 2880 6.18 1138 1042 297.5

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