ASTROSAT CZTI

Data Quality Report

Orbit 20230711_A12_044T22_9000005740_level2

Creation date: 2023-07-14T10:52:52.546992
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_044T22_9000005740cztM0_level2.fits modeM0/AS1A12_044T22_9000005740cztM0_level2_quad_clean.evt
Size (bytes)261,336,960247,348,800
Size249.2 MB 235.9 MB
Events in quadrant A1,515,2681,374,854
Events in quadrant B1,511,1061,464,572
Events in quadrant C1,547,2601,384,431
Events in quadrant D1,307,1281,233,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0956670
B0601930
C0596350
D0765170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06040
B06040
C06040
D06040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2957012964.382820%
B295741090.368567%
C29573180.060866%
D2957613984.726806%

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 46628 29571 0 0 0.00% 0.00%
B 46628 29571 0 0 0.00% 0.00%
C 46628 29573 0 0 0.00% 0.00%
D 46628 29552 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 1242 8.52 395 368 102.6
A 7 110 1229 8.39 395 368 102.6
A 0 29 1202 8.13 395 368 102.6
B 2 9 1303 11.43 399 379 80.8
B 3 80 1120 9.17 399 379 80.8
B 3 17 1089 8.78 399 379 80.8
C 1 81 1249 8.15 409 383 106.3
C 3 202 1227 7.94 409 383 106.3
C 3 203 1220 7.88 409 383 106.3
D 7 3 992 6.37 374 340 102.4
D 10 189 947 5.93 374 340 102.4
D 6 67 930 5.76 374 340 102.4

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