ASTROSAT CZTI

Data Quality Report

Orbit 20220709_A11_049T05_9000005232_level2

Creation date: 2026-01-03T16:55:08.871480
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/AS1A11_049T05_9000005232cztM0_level2.fits modeM0/AS1A11_049T05_9000005232cztM0_level2_quad_clean.evt
Size (bytes)887,094,720902,810,880
Size846.0 MB 861.0 MB
Events in quadrant A5,526,8325,649,530
Events in quadrant B5,215,4205,525,421
Events in quadrant C5,303,5765,215,414
Events in quadrant D4,492,6384,625,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01944500
B02043380
C02133040
D02710960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018880
B018880
C018880
D018880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A922762350.254671%
B9227610441.131388%
C9227620902.264944%
D9227655656.030821%

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 126212 92275 0 0 0.00% 0.00%
B 126212 92265 0 0 0.00% 0.00%
C 126212 92241 0 0 0.00% 0.00%
D 126212 92146 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 9 19 4487 8.74 1443 1357 358.0
A 7 110 4456 8.66 1443 1357 358.0
A 0 29 4390 8.47 1443 1357 358.0
B 2 9 4504 12.0 1382 1325 264.9
B 3 80 4032 10.22 1382 1325 264.9
B 2 8 3626 8.69 1382 1325 264.9
C 1 81 4285 8.38 1400 1314 354.3
C 3 202 4185 8.1 1400 1314 354.3
C 1 80 4159 8.03 1400 1314 354.3
D 7 3 3389 6.44 1290 1176 343.4
D 4 160 3275 6.11 1290 1176 343.4
D 10 113 3242 6.02 1290 1176 343.4

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