ASTROSAT CZTI

Data Quality Report

Orbit 19672

Creation date: 2024-06-27T18:05:38.197927
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/AS1T03_037T01_9000002930_19672cztM0_level2.evt modeM0/AS1T03_037T01_9000002930_19672cztM0_level2_quad_clean.evt
Size (bytes)455,486,400110,243,520
Size434.4 MB 105.1 MB
Events in quadrant A3,206,422729,121
Events in quadrant B3,320,740747,950
Events in quadrant C3,374,171721,236
Events in quadrant D3,466,416702,208

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133362
B0135852
C0137282
D0143682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279350.557414%
B6279631.003344%
C6279991.576684%
D6279490.780379%

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 7549 6280 10 10 0.13% 0.16%
B 7549 6280 7 7 0.09% 0.11%
C 7549 6279 0 0 0.00% 0.00%
D 7549 6280 17 17 0.23% 0.27%

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 5 16 103857 648.3 793 777 159.0
A 11 29 43513 268.78 793 777 159.0
A 13 252 6943 38.78 793 777 159.0
B 0 198 72226 480.6 795 775 148.7
B 3 112 41355 272.95 795 775 148.7
B 0 197 36705 241.68 795 775 148.7
C 14 238 124598 687.45 783 788 180.1
C 9 221 105425 580.99 783 788 180.1
C 3 233 85778 471.9 783 788 180.1
D 12 218 263830 1396.34 788 765 188.4
D 1 20 134618 710.48 788 765 188.4
D 1 52 91531 481.78 788 765 188.4

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