ASTROSAT CZTI

Data Quality Report

Orbit 32871

Creation date: 2024-06-27T20:42:49.737625
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/AS1A11_005T04_9000004742_32871cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32871cztM0_level2_quad_clean.evt
Size (bytes)468,299,52075,847,680
Size446.6 MB 72.3 MB
Events in quadrant A2,537,146493,715
Events in quadrant B2,918,423510,911
Events in quadrant C2,719,834509,077
Events in quadrant D5,647,801412,016

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108443
B0119762
C0113702
D0205242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529260.113379%
B5292961.814059%
C5292280.529101%
D529277714.682540%

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 7175 5293 1 1 0.01% 0.02%
B 7175 5293 56 56 0.78% 1.06%
C 7175 5293 15 15 0.21% 0.28%
D 7175 5293 669 669 9.32% 12.64%

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 14 63 38869 303.02 639 629 126.2
A 13 6 21887 168.45 639 629 126.2
A 13 254 9934 73.73 639 629 126.2
B 5 172 236941 1980.26 643 629 119.3
B 0 230 56602 469.05 643 629 119.3
B 12 1 35213 289.81 643 629 119.3
C 0 10 76150 518.93 635 642 145.5
C 14 67 60449 411.03 635 642 145.5
C 3 233 33356 224.83 635 642 145.5
D 12 233 1443340 9984.14 570 558 144.5
D 8 195 722578 4996.42 570 558 144.5
D 10 203 356118 2460.5 570 558 144.5

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