ASTROSAT CZTI

Data Quality Report

Orbit 20221012_A11_047T09_9000005362_level2

Creation date: 2026-01-05T20:27:04.259545
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_047T09_9000005362cztM0_level2.fits modeM0/AS1A11_047T09_9000005362cztM0_level2_quad_clean.evt
Size (bytes)71,375,04062,458,560
Size68.1 MB 59.6 MB
Events in quadrant A431,848359,990
Events in quadrant B414,464358,328
Events in quadrant C412,146341,199
Events in quadrant D341,586270,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191790
B0181020
C0208540
D0339640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8066510.632284%
B80771611.993314%
C80734405.450266%
D8061107913.385436%

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 9397 8079 0 0 0.00% 0.00%
B 9396 8080 0 0 0.00% 0.00%
C 9396 8046 0 0 0.00% 0.00%
D 9396 8050 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 19 368 8.8 112 105 29.9
A 7 110 335 7.7 112 105 29.9
A 0 29 332 7.6 112 105 29.9
B 2 9 340 9.77 109 104 24.2
B 3 80 296 7.94 109 104 24.2
B 5 232 294 7.86 109 104 24.2
C 1 81 367 8.9 109 102 29.8
C 1 80 342 8.06 109 102 29.8
C 3 187 289 6.28 109 102 29.8
D 7 3 263 6.3 97 89 27.6
D 4 160 255 6.01 97 89 27.6
D 3 31 247 5.72 97 89 27.6

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