ASTROSAT CZTI

Data Quality Report

Orbit 26607

Creation date: 2024-06-27T19:30:56.638995
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/AS1A09_095T02_9000003846_26607cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26607cztM0_level2_quad_clean.evt
Size (bytes)612,587,52082,105,920
Size584.2 MB 78.3 MB
Events in quadrant A3,023,429545,495
Events in quadrant B3,243,836548,901
Events in quadrant C3,397,854520,313
Events in quadrant D8,475,039445,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126660
B0132680
C0138900
D0293990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6095380.623462%
B6095911.493027%
C60961262.066929%
D6096158826.049869%

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 7150 6097 1 1 0.01% 0.02%
B 7150 6097 20 20 0.28% 0.33%
C 7151 6098 46 46 0.64% 0.75%
D 7151 6098 1679 1679 23.48% 27.53%

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 64973 423.01 763 747 151.8
A 5 168 16490 103.69 763 747 151.8
A 13 254 10861 66.61 763 747 151.8
B 0 189 114464 823.22 752 735 138.2
B 3 64 84523 606.5 752 735 138.2
B 5 172 49080 349.94 752 735 138.2
C 15 208 298249 1796.39 719 723 165.6
C 3 233 160713 965.98 719 723 165.6
C 14 238 117852 707.2 719 723 165.6
D 1 52 5003454 31280.69 669 650 159.9
D 7 80 634001 3960.11 669 650 159.9
D 2 250 257983 1609.01 669 650 159.9

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