ASTROSAT CZTI

Data Quality Report

Orbit 06873

Creation date: 2024-06-27T15:12:36.473728
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/AS1A02_005T01_9000000948_06873cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06873cztM0_level2_quad_clean.evt
Size (bytes)437,431,68070,099,200
Size417.2 MB 66.9 MB
Events in quadrant A3,141,542423,345
Events in quadrant B3,188,699426,114
Events in quadrant C3,189,936419,550
Events in quadrant D3,294,048408,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133982
B0134201
C0133641
D0137351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6374540.847192%
B6374530.831503%
C6374540.847192%
D6374510.800126%

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 7609 6375 0 0 0.00% 0.00%
B 7609 6375 3 3 0.04% 0.05%
C 7609 6375 0 0 0.00% 0.00%
D 7609 6375 2 2 0.03% 0.03%

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 15 223 15307 88.44 807 791 164.1
A 13 248 14585 84.04 807 791 164.1
A 0 226 7711 42.16 807 791 164.1
B 0 214 18533 117.13 804 787 151.5
B 4 48 16426 103.22 804 787 151.5
B 12 111 14173 88.35 804 787 151.5
C 9 247 147732 820.55 778 782 179.1
C 13 61 6205 30.28 778 782 179.1
C 7 159 2769 11.1 778 782 179.1
D 12 221 143175 737.58 788 764 193.1
D 8 195 56816 290.31 788 764 193.1
D 2 152 37771 191.67 788 764 193.1

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