ASTROSAT CZTI

Data Quality Report

Orbit 20220312_A11_053T01_9000004996_level2

Creation date: 2026-01-01T20:54:00.261628
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_053T01_9000004996cztM0_level2.fits modeM0/AS1A11_053T01_9000004996cztM0_level2_quad_clean.evt
Size (bytes)241,191,360260,285,760
Size230.0 MB 248.2 MB
Events in quadrant A1,484,7941,581,257
Events in quadrant B1,430,5221,596,494
Events in quadrant C1,485,4761,591,832
Events in quadrant D1,226,4561,435,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500630
B0569290
C0526710
D0725060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24376270.110765%
B243764611.891204%
C243762260.927141%
D2437612615.173121%

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 36035 24377 0 0 0.00% 0.00%
B 36035 24370 0 0 0.00% 0.00%
C 36035 24374 0 0 0.00% 0.00%
D 36035 24330 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 1265 9.21 388 367 97.5
A 9 19 1235 8.9 388 367 97.5
A 0 29 1190 8.44 388 367 97.5
B 2 9 1203 11.11 379 363 75.6
B 3 80 1123 10.05 379 363 75.6
B 2 8 1018 8.66 379 363 75.6
C 1 81 1300 9.13 393 373 101.5
C 1 80 1242 8.56 393 373 101.5
C 9 233 1023 6.4 393 373 101.5
D 7 3 898 6.03 351 323 95.4
D 10 189 890 5.94 351 323 95.4
D 10 113 890 5.94 351 323 95.4

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