ASTROSAT CZTI

Data Quality Report

Orbit 25200

Creation date: 2024-06-27T19:14:58.825210
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/AS1A07_027T01_9000003690_25200cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25200cztM0_level2_quad_clean.evt
Size (bytes)470,099,52086,019,840
Size448.3 MB 82.0 MB
Events in quadrant A3,295,089561,641
Events in quadrant B3,394,612568,378
Events in quadrant C3,300,136526,884
Events in quadrant D3,835,090523,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134560
B0137270
C0134530
D0154290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071691.136551%
B6071821.350684%
C60721021.679842%
D60721161.910408%

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 7381 6072 1 1 0.01% 0.02%
B 7381 6072 4 4 0.05% 0.07%
C 7382 6073 0 0 0.00% 0.00%
D 7382 6073 64 64 0.87% 1.05%

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 13 254 9304 50.45 852 839 167.8
A 0 226 7618 40.4 852 839 167.8
A 3 137 7120 37.43 852 839 167.8
B 0 190 65363 419.73 838 823 153.8
B 3 64 30974 196.08 838 823 153.8
B 12 111 17860 110.8 838 823 153.8
C 14 238 133215 736.13 789 796 179.9
C 7 247 79719 438.74 789 796 179.9
C 2 16 9164 46.52 789 796 179.9
D 12 233 297295 1526.56 810 788 194.2
D 8 195 207146 1062.43 810 788 194.2
D 1 52 106136 542.38 810 788 194.2

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