ASTROSAT CZTI

Data Quality Report

Orbit 29693

Creation date: 2024-06-27T20:06:55.925420
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/AS1A10_007T01_9000004276_29693cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29693cztM0_level2_quad_clean.evt
Size (bytes)12,528,0003,326,400
Size11.9 MB 3.2 MB
Events in quadrant A84,51118,969
Events in quadrant B100,15216,314
Events in quadrant C89,66122,632
Events in quadrant D90,04222,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02216
B02218
C02218
D02218

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024332082
B032522861
C023872021
D026612287

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15353.267974%
B13021.538462%
C18052.777778%
D18010.555556%

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 847 241 1 1 0.12% 0.41%
B 840 203 0 0 0.00% 0.00%
C 835 274 0 0 0.00% 0.00%
D 806 271 0 0 0.00% 0.00%

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 15140 2653.23 17 17 5.7
A 13 254 317 52.63 17 17 5.7
A 3 137 172 27.19 17 17 5.7
B 6 159 41001 8483.01 14 14 4.8
B 12 111 380 75.75 14 14 4.8
B 0 229 371 73.89 14 14 4.8
C 14 238 3651 539.23 20 20 6.7
C 3 233 3132 462.16 20 20 6.7
C 14 254 624 89.7 20 20 6.7
D 8 195 7782 1160.05 20 19 6.7
D 13 104 1891 279.74 20 19 6.7
D 2 250 1635 241.48 20 19 6.7

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