ASTROSAT CZTI

Data Quality Report

Orbit 40973

Creation date: 2024-06-27T22:22:53.363885
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_052T04_9000005582_40973cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40973cztM0_level2_quad_clean.evt
Size (bytes)378,429,120106,721,280
Size360.9 MB 101.8 MB
Events in quadrant A3,563,524719,027
Events in quadrant B3,216,590724,981
Events in quadrant C3,148,293692,682
Events in quadrant D3,573,317640,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146473
B0141092
C0134512
D0152922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506130.199816%
B6506691.060559%
C6506410.630188%
D65061251.921303%

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 9221 6508 4 4 0.04% 0.06%
B 9221 6508 51 51 0.55% 0.78%
C 9221 6508 39 39 0.42% 0.60%
D 9221 6508 110 110 1.19% 1.69%

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 578614 3926.13 719 703 147.2
A 12 189 148501 1004.09 719 703 147.2
A 2 79 21689 142.57 719 703 147.2
B 5 255 386608 2757.11 711 690 140.0
B 0 229 22863 158.41 711 690 140.0
B 12 111 17669 121.3 711 690 140.0
C 15 214 279176 1720.72 697 702 161.8
C 0 10 104002 638.3 697 702 161.8
C 12 249 27422 165.11 697 702 161.8
D 13 249 534147 3116.18 699 678 171.2
D 12 233 102305 593.64 699 678 171.2
D 2 249 98552 571.72 699 678 171.2

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