ASTROSAT CZTI

Data Quality Report

Orbit 21235

Creation date: 2024-06-27T18:25:15.223804
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/AS1A05_037T01_9000003140_21235cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21235cztM0_level2_quad_clean.evt
Size (bytes)339,523,20050,060,160
Size323.8 MB 47.7 MB
Events in quadrant A2,299,309311,511
Events in quadrant B2,367,451313,713
Events in quadrant C2,201,442304,626
Events in quadrant D3,122,247284,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095371
B096912
C092281
D0121241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42891463.404057%
B42881754.081157%
C42881693.941231%
D42882616.086754%

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 5584 4289 4 4 0.07% 0.09%
B 5583 4288 45 45 0.81% 1.05%
C 5583 4288 0 0 0.00% 0.00%
D 5583 4288 116 116 2.08% 2.71%

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 5 16 41070 349.62 564 553 115.9
A 11 47 26701 225.63 564 553 115.9
A 12 96 22303 187.68 564 553 115.9
B 0 189 105639 970.98 559 546 108.2
B 3 64 31065 281.97 559 546 108.2
B 0 190 16810 150.27 559 546 108.2
C 14 238 84515 666.35 537 540 126.0
C 0 10 10987 82.9 537 540 126.0
C 7 247 10781 81.26 537 540 126.0
D 13 174 401594 3032.98 537 521 132.2
D 1 239 290239 2190.89 537 521 132.2
D 13 153 159008 1198.5 537 521 132.2

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