ASTROSAT CZTI

Data Quality Report

Orbit 20230521_A12_037T03_9000005654_level2

Creation date: 2023-05-22T11:04:48.372716
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/AS1A12_037T03_9000005654cztM0_level2.fits modeM0/AS1A12_037T03_9000005654cztM0_level2_quad_clean.evt
Size (bytes)66,885,12079,329,600
Size63.8 MB 75.7 MB
Events in quadrant A401,424524,930
Events in quadrant B350,904390,640
Events in quadrant C386,192487,989
Events in quadrant D344,278456,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171350
B0318650
C0178420
D0180280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7796430.551565%
B7796179823.063109%
C77962673.424833%
D77961291.654695%

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 10541 7796 0 0 0.00% 0.00%
B 10541 7794 0 0 0.00% 0.00%
C 10541 7759 0 0 0.00% 0.00%
D 10541 7795 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 19 354 9.0 104 98 28.4
A 7 110 334 8.3 104 98 28.4
A 14 95 333 8.26 104 98 28.4
B 2 9 311 10.78 92 88 20.7
B 3 17 273 8.94 92 88 20.7
B 2 8 256 8.12 92 88 20.7
C 1 80 303 7.54 101 95 27.6
C 1 81 301 7.47 101 95 27.6
C 3 202 284 6.85 101 95 27.6
D 10 189 267 6.26 98 89 28.4
D 6 38 265 6.19 98 89 28.4
D 6 62 260 6.01 98 89 28.4

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