ASTROSAT CZTI

Data Quality Report

Orbit 35416

Creation date: 2022-09-12T19:33:57.996186
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/AS1T05_022T01_9000005070_35416cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35416cztM0_level2_quad_clean.evt
Size (bytes)550,926,72084,836,160
Size525.4 MB 80.9 MB
Events in quadrant A2,679,462573,984
Events in quadrant B5,980,567522,284
Events in quadrant C3,405,830562,024
Events in quadrant D4,240,978520,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115813
B0215692
C0134792
D0163432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5572130.233309%
B5572124722.379756%
C55721803.230438%
D55723756.730079%

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 8678 5574 1 1 0.01% 0.02%
B 8678 5574 923 923 10.64% 16.56%
C 8678 5574 141 141 1.62% 2.53%
D 8678 5574 271 271 3.12% 4.86%

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 10 83 131362 992.44 652 640 131.7
A 13 6 18302 134.09 652 640 131.7
A 9 143 8575 60.24 652 640 131.7
B 4 251 788481 6838.34 598 584 115.2
B 5 236 745932 6469.05 598 584 115.2
B 5 31 555605 4817.16 598 584 115.2
C 0 10 452190 3049.95 632 636 148.1
C 15 214 224358 1511.1 632 636 148.1
C 9 69 186892 1258.04 632 636 148.1
D 7 80 408320 2726.41 612 596 149.5
D 13 249 286553 1912.17 612 596 149.5
D 8 195 230192 1535.29 612 596 149.5

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