ASTROSAT CZTI

Data Quality Report

Orbit 41730

Creation date: 2024-06-27T22:32:09.122233
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_070T01_9000005694_41730cztM0_level2.fits modeM0/AS1A12_070T01_9000005694_41730cztM0_level2_quad_clean.evt
Size (bytes)357,546,24084,504,960
Size341.0 MB 80.6 MB
Events in quadrant A2,967,727588,256
Events in quadrant B3,621,985512,724
Events in quadrant C2,788,420565,286
Events in quadrant D3,426,518506,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121341
B0148951
C0120151
D0143851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5517180.326264%
B551883615.150417%
C55181122.029721%
D55183195.781080%

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 7100 5517 13 13 0.18% 0.24%
B 7101 5519 318 318 4.48% 5.76%
C 7101 5518 109 109 1.53% 1.98%
D 7100 5518 285 285 4.01% 5.16%

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 520510 4288.43 587 575 121.2
A 2 79 124656 1023.42 587 575 121.2
A 6 10 28301 228.68 587 575 121.2
B 0 186 1548741 15530.65 517 503 99.7
B 15 85 18107 176.59 517 503 99.7
B 12 111 12770 123.05 517 503 99.7
C 0 10 357041 2714.28 563 563 131.3
C 15 214 222465 1689.6 563 563 131.3
C 14 67 8113 57.49 563 563 131.3
D 13 249 855528 6290.44 558 542 135.9
D 2 249 114491 838.36 558 542 135.9
D 1 47 110113 806.15 558 542 135.9

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