ASTROSAT CZTI

Data Quality Report

Orbit 25894

Creation date: 2024-06-27T19:22:33.527517
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_25894cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25894cztM0_level2_quad_clean.evt
Size (bytes)501,917,760102,144,960
Size478.7 MB 97.4 MB
Events in quadrant A3,441,347712,982
Events in quadrant B3,162,961701,642
Events in quadrant C3,231,052657,898
Events in quadrant D4,972,576616,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139750
B0129370
C0133830
D0185480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5787971.676171%
B5786991.711027%
C57861262.177670%
D578674912.945040%

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 7052 5788 2 2 0.03% 0.03%
B 7051 5787 3 3 0.04% 0.05%
C 7051 5787 2 2 0.03% 0.03%
D 7051 5787 557 557 7.90% 9.63%

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 396610 2519.94 787 774 157.1
A 13 254 9565 55.96 787 774 157.1
A 8 192 7900 45.37 787 774 157.1
B 0 219 84057 580.42 763 746 143.5
B 10 245 42599 291.58 763 746 143.5
B 0 190 30431 206.81 763 746 143.5
C 3 233 281208 1667.34 726 730 168.2
C 14 238 120112 709.68 726 730 168.2
C 13 61 5020 25.5 726 730 168.2
D 1 52 2057124 12175.15 712 695 168.9
D 7 80 175061 1032.34 712 695 168.9
D 2 234 22037 126.36 712 695 168.9

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