ASTROSAT CZTI

Data Quality Report

Orbit 25521

Creation date: 2024-06-27T19:18:36.332312
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_147T01_9000003722_25521cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25521cztM0_level2_quad_clean.evt
Size (bytes)489,096,00089,219,520
Size466.4 MB 85.1 MB
Events in quadrant A3,444,370580,387
Events in quadrant B3,458,298585,967
Events in quadrant C3,428,137543,860
Events in quadrant D4,036,734534,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139080
B0139320
C0138690
D0159580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65511342.045489%
B65511572.396581%
C65511602.442375%
D65511802.747672%

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 7601 6552 0 0 0.00% 0.00%
B 7601 6552 0 0 0.00% 0.00%
C 7601 6552 0 0 0.00% 0.00%
D 7601 6552 76 76 1.00% 1.16%

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 13 254 9815 49.84 894 877 179.3
A 3 137 7996 39.7 894 877 179.3
A 0 226 7640 37.72 894 877 179.3
B 12 111 20238 114.87 880 857 168.7
B 11 111 18495 104.54 880 857 168.7
B 14 111 17102 96.28 880 857 168.7
C 14 238 133605 683.38 837 846 194.3
C 2 16 19091 93.92 837 846 194.3
C 3 233 10390 49.13 837 846 194.3
D 1 52 421437 2044.06 851 826 205.8
D 8 195 276545 1339.92 851 826 205.8
D 2 82 114861 554.18 851 826 205.8

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