ASTROSAT CZTI

Data Quality Report

Orbit 06756

Creation date: 2024-06-27T15:11:18.961555
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/AS1A02_006T01_9000000934_06756cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06756cztM0_level2_quad_clean.evt
Size (bytes)434,062,08095,664,960
Size414.0 MB 91.2 MB
Events in quadrant A3,171,945617,100
Events in quadrant B3,097,015627,197
Events in quadrant C2,921,149612,387
Events in quadrant D3,513,992587,773

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138552
B0134991
C0132851
D0148441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6492701.078250%
B6492510.785582%
C6492300.462107%
D64921011.555761%

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 7582 6493 16 16 0.21% 0.25%
B 7582 6493 1 1 0.01% 0.02%
C 7582 6493 0 0 0.00% 0.00%
D 7582 6493 49 49 0.65% 0.75%

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 4 2 71899 445.32 776 759 159.7
A 14 111 36009 220.66 776 759 159.7
A 15 234 33721 206.34 776 759 159.7
B 0 214 49405 323.61 780 761 150.3
B 12 111 14983 94.61 780 761 150.3
B 11 111 12109 75.49 780 761 150.3
C 13 61 5850 29.42 746 748 173.4
C 8 222 3478 15.74 746 748 173.4
C 9 247 3077 13.43 746 748 173.4
D 8 195 257024 1394.79 749 725 183.8
D 2 216 225840 1225.08 749 725 183.8
D 2 16 52255 280.43 749 725 183.8

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