ASTROSAT CZTI

Data Quality Report

Orbit 05851

Creation date: 2024-06-27T14:59:59.926329
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/AS1G06_039T01_9000000758_05851cztM0_level2.evt modeM0/AS1G06_039T01_9000000758_05851cztM0_level2_quad_clean.evt
Size (bytes)496,906,560122,348,160
Size473.9 MB 116.7 MB
Events in quadrant A3,421,116806,904
Events in quadrant B3,629,480807,402
Events in quadrant C3,354,702797,194
Events in quadrant D4,115,859754,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158672
B0160791
C0158751
D0178551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77642242.885111%
B77642322.988150%
C77641702.189593%
D77642272.923751%

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 7874 7766 0 0 0.00% 0.00%
B 7874 7766 0 0 0.00% 0.00%
C 7874 7766 0 0 0.00% 0.00%
D 7874 7766 46 46 0.58% 0.59%

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 12 194 8713 43.53 886 866 180.3
A 0 226 8552 42.63 886 866 180.3
A 15 234 8232 40.86 886 866 180.3
B 15 204 94399 550.29 891 867 170.0
B 0 219 34075 195.38 891 867 170.0
B 4 48 20274 114.18 891 867 170.0
C 1 16 12955 61.35 854 855 197.2
C 13 61 6981 31.06 854 855 197.2
C 8 222 2910 10.42 854 855 197.2
D 1 239 647306 3115.52 848 819 207.5
D 2 152 115485 552.59 848 819 207.5
D 9 85 33946 159.64 848 819 207.5

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