ASTROSAT CZTI

Data Quality Report

Orbit 40372

Creation date: 2024-06-27T22:15:22.229188
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_056T02_9000005538_40372cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40372cztM0_level2_quad_clean.evt
Size (bytes)425,773,440105,108,480
Size406.0 MB 100.2 MB
Events in quadrant A3,800,422731,776
Events in quadrant B3,592,012755,928
Events in quadrant C2,982,087718,269
Events in quadrant D4,933,361570,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148963
B0149542
C0122312
D0185882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58211222.095860%
B5821320.549734%
C5821220.377942%
D582195816.457653%

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 9616 5823 81 81 0.84% 1.39%
B 9616 5823 14 14 0.15% 0.24%
C 9616 5823 14 14 0.15% 0.24%
D 9616 5823 427 427 4.44% 7.33%

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 13 248 565143 4072.18 689 679 138.6
A 10 83 503506 3627.52 689 679 138.6
A 2 79 34705 245.47 689 679 138.6
B 7 202 719359 5538.07 682 664 129.8
B 5 255 81235 620.86 682 664 129.8
B 0 245 33940 256.42 682 664 129.8
C 15 214 249941 1631.29 667 673 152.8
C 0 10 62420 404.09 667 673 152.8
C 14 254 55252 357.18 667 673 152.8
D 12 227 1760019 11544.8 620 602 152.4
D 2 250 293493 1921.87 620 602 152.4
D 13 171 210748 1378.92 620 602 152.4

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