ASTROSAT CZTI

Data Quality Report

Orbit 32151

Creation date: 2024-06-27T20:37:03.693562
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_053T11_9000004688_32151cztM0_level2.evt modeM0/AS1A10_053T11_9000004688_32151cztM0_level2_quad_clean.evt
Size (bytes)604,946,88071,691,840
Size576.9 MB 68.4 MB
Events in quadrant A3,368,535438,602
Events in quadrant B5,312,869441,421
Events in quadrant C4,818,682419,169
Events in quadrant D4,390,010426,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135754
B0200313
C0185393
D0175263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371951.491132%
B63712053.217705%
C63714537.110344%
D63711472.307330%

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 7531 6373 0 0 0.00% 0.00%
B 7531 6373 20 20 0.27% 0.31%
C 7531 6373 179 179 2.38% 2.81%
D 7531 6373 36 36 0.48% 0.56%

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 12 189 42956 246.71 860 846 170.7
A 13 6 11059 59.83 860 846 170.7
A 13 254 10327 55.55 860 846 170.7
B 6 159 1654614 10323.14 854 834 160.2
B 10 245 241410 1501.71 854 834 160.2
B 0 190 25427 153.51 854 834 160.2
C 3 233 1043099 5580.37 810 819 186.8
C 0 10 435119 2325.24 810 819 186.8
C 14 238 141599 753.74 810 819 186.8
D 8 195 1008940 5123.82 843 826 196.8
D 12 233 129463 653.81 843 826 196.8
D 12 218 33162 164.35 843 826 196.8

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