ASTROSAT CZTI

Data Quality Report

Orbit 25792

Creation date: 2024-06-27T19:21:28.775984
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/AS1A07_068T01_9000003756_25792cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25792cztM0_level2_quad_clean.evt
Size (bytes)632,062,08096,143,040
Size602.8 MB 91.7 MB
Events in quadrant A7,687,237548,034
Events in quadrant B3,252,486675,438
Events in quadrant C3,191,343628,410
Events in quadrant D4,590,357625,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271230
B0136440
C0135470
D0178840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6220174228.006431%
B6220390.627010%
C6220590.948553%
D6220620.996785%

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 7470 6220 1603 1603 21.46% 25.77%
B 7470 6220 5 5 0.07% 0.08%
C 7470 6220 0 0 0.00% 0.00%
D 7470 6220 13 13 0.17% 0.21%

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 0 13 4873554 33177.47 728 716 146.9
A 13 254 7692 47.49 728 716 146.9
A 6 16 6985 42.68 728 716 146.9
B 0 190 23220 145.73 814 796 153.9
B 12 111 18110 112.52 814 796 153.9
B 11 111 15962 98.56 814 796 153.9
C 14 238 126272 704.26 770 778 178.2
C 3 233 51312 283.59 770 778 178.2
C 1 16 8165 41.46 770 778 178.2
D 1 52 1285350 6742.01 790 772 190.5
D 8 195 183251 957.73 790 772 190.5
D 7 80 48667 251.37 790 772 190.5

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