ASTROSAT CZTI

Data Quality Report

Orbit 25272

Creation date: 2024-06-27T19:15:45.985332
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_027T02_9000003696_25272cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25272cztM0_level2_quad_clean.evt
Size (bytes)509,319,360118,759,680
Size485.7 MB 113.3 MB
Events in quadrant A3,097,235829,300
Events in quadrant B3,304,553820,395
Events in quadrant C3,212,915778,429
Events in quadrant D5,409,053755,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127990
B0135520
C0131850
D0203660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5921811.368012%
B59221202.026342%
C59221131.908139%
D59222604.390409%

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 7231 5922 0 0 0.00% 0.00%
B 7232 5923 23 23 0.32% 0.39%
C 7232 5923 0 0 0.00% 0.00%
D 7232 5923 158 158 2.18% 2.67%

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 3 1 32855 205.04 795 780 156.4
A 13 254 9907 58.34 795 780 156.4
A 0 226 7087 40.32 795 780 156.4
B 3 64 156339 1095.6 778 762 142.0
B 0 190 58907 409.47 778 762 142.0
B 15 33 31884 219.17 778 762 142.0
C 14 238 122957 710.97 754 762 171.9
C 0 239 86888 501.11 754 762 171.9
C 0 207 33519 190.59 754 762 171.9
D 8 195 1264294 6906.9 768 747 182.9
D 1 52 1029781 5624.99 768 747 182.9
D 12 235 126791 688.99 768 747 182.9

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