ASTROSAT CZTI

Data Quality Report

Orbit 20230303_A12_032T04_9000005528_level2

Creation date: 2023-03-08T11:28:05.769185
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_032T04_9000005528cztM0_level2.fits modeM0/AS1A12_032T04_9000005528cztM0_level2_quad_clean.evt
Size (bytes)728,334,720824,921,280
Size694.6 MB 786.7 MB
Events in quadrant A4,489,0865,350,030
Events in quadrant B4,308,2925,406,880
Events in quadrant C3,790,5224,044,886
Events in quadrant D3,632,1804,358,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017320
B017320
C017320
D017320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880160
B01868610
C03723350
D02654280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A849437470.879413%
B8494313721.615201%
C849432293627.001636%
D8494376979.061371%

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 130871 84942 0 0 0.00% 0.00%
B 130872 84936 0 0 0.00% 0.00%
C 130872 84745 0 0 0.00% 0.00%
D 130871 84777 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 3707 8.96 1169 1096 291.3
A 7 110 3701 8.94 1169 1096 291.3
A 0 29 3588 8.56 1169 1096 291.3
B 2 9 3684 11.79 1141 1089 220.2
B 3 80 3300 10.04 1141 1089 220.2
B 3 17 3025 8.79 1141 1089 220.2
C 1 81 3254 9.03 1002 939 256.4
C 3 202 3104 8.44 1002 939 256.4
C 3 203 3068 8.3 1002 939 256.4
D 10 189 2760 6.58 1038 945 275.7
D 7 3 2686 6.31 1038 945 275.7
D 6 62 2646 6.17 1038 945 275.7

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