ASTROSAT CZTI

Data Quality Report

Orbit 35248

Creation date: 2022-04-05T17:38:46.976940
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/AS1C07_004T01_9000005052_35248cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35248cztM0_level2_quad_clean.evt
Size (bytes)356,506,56049,777,920
Size340.0 MB 47.5 MB
Events in quadrant A1,513,077356,831
Events in quadrant B3,618,218312,405
Events in quadrant C1,549,647360,834
Events in quadrant D3,945,651297,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060651
B0124801
C061661
D0134921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2498311.240993%
B249888735.508407%
C2498742.962370%
D249876030.424339%

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 2498 2498 22 22 0.88% 0.88%
B 2497 2497 680 680 27.23% 27.23%
C 2498 2498 44 44 1.76% 1.76%
D 2498 2498 651 651 26.06% 26.06%

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 7 3 123325 1805.93 338 334 68.1
A 10 83 47937 698.98 338 334 68.1
A 9 143 23124 334.64 338 334 68.1
B 5 236 2130512 38941.82 285 280 54.7
B 5 255 154967 2827.76 285 280 54.7
B 5 172 143662 2621.1 285 280 54.7
C 0 10 193803 2630.4 319 322 73.6
C 15 214 106012 1436.87 319 322 73.6
C 15 159 3624 44.89 319 322 73.6
D 7 80 1171662 15823.61 296 288 74.0
D 8 195 1044920 14111.51 296 288 74.0
D 1 47 142031 1914.75 296 288 74.0

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