ASTROSAT CZTI

Data Quality Report

Orbit 32850

Creation date: 2024-06-27T20:42:57.876875
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/AS1A11_088T02_9000004740_32850cztM0_level2.evt modeM0/AS1A11_088T02_9000004740_32850cztM0_level2_quad_clean.evt
Size (bytes)115,015,6807,827,840
Size109.7 MB 7.5 MB
Events in quadrant A469,58841,508
Events in quadrant B776,27042,440
Events in quadrant C641,75537,994
Events in quadrant D1,525,39837,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020071
B029830
C025470
D052380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99400.000000%
B994989.859155%
C994414.124748%
D99425425.553320%

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 994 994 0 0 0.00% 0.00%
B 994 994 66 66 6.64% 6.64%
C 994 994 20 20 2.01% 2.01%
D 994 994 205 205 20.62% 20.62%

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 9 143 4078 149.35 119 116 26.5
A 0 135 2543 91.48 119 116 26.5
A 13 254 1975 70.07 119 116 26.5
B 5 172 233505 9606.53 113 110 24.3
B 0 199 39185 1608.33 113 110 24.3
B 0 190 10230 416.54 113 110 24.3
C 0 10 167574 6113.81 110 110 27.4
C 3 233 28054 1020.19 110 110 27.4
C 1 241 12609 456.32 110 110 27.4
D 8 195 520701 18023.19 105 103 28.9
D 2 250 177018 6124.83 105 103 28.9
D 12 227 128990 4462.09 105 103 28.9

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