ASTROSAT CZTI

Data Quality Report

Orbit 12760

Creation date: 2024-06-27T16:32:19.127841
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/AS1A04_112T01_9000001884_12760cztM0_level2.evt modeM0/AS1A04_112T01_9000001884_12760cztM0_level2_quad_clean.evt
Size (bytes)537,811,200110,954,880
Size512.9 MB 105.8 MB
Events in quadrant A3,504,839733,272
Events in quadrant B4,417,275719,121
Events in quadrant C3,393,693733,025
Events in quadrant D4,499,288689,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147223
B0175782
C0148942
D0180682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6963781.120207%
B69634596.591986%
C6963841.206377%
D69632894.150510%

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 7799 6965 3 3 0.04% 0.04%
B 7799 6965 289 289 3.71% 4.15%
C 7799 6965 12 12 0.15% 0.17%
D 7799 6965 221 221 2.83% 3.17%

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 23 127830 767.35 813 793 165.6
A 12 189 92296 552.71 813 793 165.6
A 15 239 74866 447.43 813 793 165.6
B 4 239 1154842 7640.31 793 773 151.0
B 0 214 62600 409.31 793 773 151.0
B 3 209 20570 131.06 793 773 151.0
C 15 208 305255 1672.65 791 794 182.0
C 13 61 5766 27.32 791 794 182.0
C 8 222 3404 14.34 791 794 182.0
D 1 52 1253285 6692.57 779 753 187.2
D 2 136 141995 754.69 779 753 187.2
D 8 195 65025 343.42 779 753 187.2

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