ASTROSAT CZTI

Data Quality Report

Orbit 26157

Creation date: 2024-06-27T19:25:29.483615
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/AS1A09_138T04_9000003776_26157cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26157cztM0_level2_quad_clean.evt
Size (bytes)502,989,12098,138,880
Size479.7 MB 93.6 MB
Events in quadrant A3,357,505639,898
Events in quadrant B3,267,654656,922
Events in quadrant C4,104,120613,704
Events in quadrant D4,076,180621,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136110
B0133080
C0160130
D0160090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300761.206349%
B6301861.364863%
C63013745.935566%
D63011602.539279%

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 7610 6300 8 8 0.11% 0.13%
B 7611 6301 3 3 0.04% 0.05%
C 7611 6301 207 207 2.72% 3.29%
D 7611 6301 97 97 1.27% 1.54%

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 132648 792.24 837 820 166.4
A 13 254 9150 50.06 837 820 166.4
A 3 137 7158 38.09 837 820 166.4
B 12 111 18315 111.19 828 807 157.5
B 11 111 16748 101.23 828 807 157.5
B 14 111 15201 91.41 828 807 157.5
C 2 16 818704 4388.22 799 805 186.4
C 14 238 129809 692.14 799 805 186.4
C 3 233 43327 228.14 799 805 186.4
D 1 52 649356 3309.73 827 809 196.0
D 12 233 257124 1308.05 827 809 196.0
D 13 104 44267 221.78 827 809 196.0

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