ASTROSAT CZTI

Data Quality Report

Orbit 49802

Creation date: 2024-12-13T12:51:07.744539
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/AS1A13_037T01_9000006440_49802cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49802cztM0_level2_quad_clean.evt
Size (bytes)1,271,082,24053,507,520
Size1.2 GB 51.0 MB
Events in quadrant A18,242,173256,693
Events in quadrant B5,084,625712,538
Events in quadrant C5,586,2102,187
Events in quadrant D17,582,224139,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0591490
B0200160
C0218110
D0569970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7161670293.590281%
B71613474.845692%
C71617161100.000000%
D7161713699.650887%

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 7160 7160 6549 6549 91.47% 91.47%
B 7161 7161 275 275 3.84% 3.84%
C 7160 7160 11 11 0.15% 0.15%
D 7160 7160 6775 6775 94.62% 94.62%

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 0 98 10930025 99379.07 311 297 110.0
A 4 204 1008600 9168.04 311 297 110.0
A 12 50 974002 8853.46 311 297 110.0
B 1 255 409830 2586.98 743 720 158.1
B 1 239 351778 2219.89 743 720 158.1
B 2 176 326865 2062.35 743 720 158.1
C 15 147 4562611 602583.73 8 7 7.6
C 15 174 178264 23542.43 8 7 7.6
C 15 197 175291 23149.78 8 7 7.6
D 15 168 4951184 60365.3 197 186 82.0
D 7 61 2441751 29768.91 197 186 82.0
D 7 126 1669726 20355.95 197 186 82.0

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