ASTROSAT CZTI

Data Quality Report

Orbit 38467

Creation date: 2024-06-27T21:53:09.772426
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_018T01_9000005386_38467cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38467cztM0_level2_quad_clean.evt
Size (bytes)459,360,00095,083,200
Size438.1 MB 90.7 MB
Events in quadrant A3,041,079666,524
Events in quadrant B3,426,941672,590
Events in quadrant C2,832,177651,611
Events in quadrant D7,236,668468,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128093
B0140842
C0121952
D0255902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005190.316403%
B6005921.532057%
C600580.133222%
D6005152225.345545%

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 7318 6006 9 9 0.12% 0.15%
B 7318 6006 68 68 0.93% 1.13%
C 7318 6006 2 2 0.03% 0.03%
D 7318 6005 1374 1374 18.78% 22.88%

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 10 83 424268 3139.56 664 651 134.9
A 9 143 29629 214.76 664 651 134.9
A 13 6 18372 131.34 664 651 134.9
B 5 184 432366 3402.42 657 640 126.9
B 5 200 173385 1361.4 657 640 126.9
B 4 171 55344 431.12 657 640 126.9
C 15 214 252723 1669.7 649 654 151.0
C 0 10 27753 179.5 649 654 151.0
C 14 254 10973 68.35 649 654 151.0
D 10 118 1710399 12258.99 576 560 139.5
D 12 227 1271842 9114.68 576 560 139.5
D 2 250 864956 6197.44 576 560 139.5

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