ASTROSAT CZTI

Data Quality Report

Orbit 25884

Creation date: 2024-06-27T19:22:27.792066
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_25884cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25884cztM0_level2_quad_clean.evt
Size (bytes)620,576,64094,881,600
Size591.8 MB 90.5 MB
Events in quadrant A7,323,299558,776
Events in quadrant B3,331,802641,360
Events in quadrant C3,918,490593,605
Events in quadrant D3,755,972601,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261400
B0142600
C0160270
D0157250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855143920.991977%
B6855270.393873%
C68552163.150985%
D6855861.254559%

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 7620 6856 1429 1429 18.75% 20.84%
B 7620 6856 1 1 0.01% 0.01%
C 7620 6856 106 106 1.39% 1.55%
D 7620 6856 57 57 0.75% 0.83%

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 4330849 27759.47 776 761 156.0
A 13 254 10033 59.44 776 761 156.0
A 3 137 7422 42.7 776 761 156.0
B 0 190 31020 190.59 828 806 158.5
B 12 111 19082 115.28 828 806 158.5
B 11 111 17181 103.29 828 806 158.5
C 3 233 644540 3504.44 777 779 183.7
C 14 238 126698 685.46 777 779 183.7
C 7 238 101813 550.0 777 779 183.7
D 1 52 538970 2822.67 794 775 190.7
D 5 223 161869 844.89 794 775 190.7
D 2 234 28461 145.2 794 775 190.7

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