ASTROSAT CZTI

Data Quality Report

Orbit 14869

Creation date: 2024-06-27T17:00:45.714155
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/AS1G08_044T01_9000002196_14869cztM0_level2.evt modeM0/AS1G08_044T01_9000002196_14869cztM0_level2_quad_clean.evt
Size (bytes)611,988,48095,935,680
Size583.6 MB 91.5 MB
Events in quadrant A4,285,425598,844
Events in quadrant B4,285,443600,524
Events in quadrant C4,186,121572,234
Events in quadrant D5,221,455564,205

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178563
B0176962
C0172802
D0215332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81871702.076463%
B81872182.662758%
C81871361.661170%
D81873233.945279%

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 9168 8190 30 30 0.33% 0.37%
B 9168 8190 15 15 0.16% 0.18%
C 9168 8190 0 0 0.00% 0.00%
D 9168 8190 155 155 1.69% 1.89%

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 12 189 180409 858.26 1032 1010 209.0
A 15 239 133571 634.19 1032 1010 209.0
A 0 226 9078 38.6 1032 1010 209.0
B 0 219 114500 568.45 1024 996 199.7
B 5 96 60482 297.92 1024 996 199.7
B 0 189 36244 176.53 1024 996 199.7
C 3 233 286332 1231.79 993 997 231.6
C 9 54 19418 79.52 993 997 231.6
C 13 61 6978 25.82 993 997 231.6
D 13 104 980345 4186.27 982 960 234.0
D 7 254 515130 2197.76 982 960 234.0
D 2 234 30141 124.73 982 960 234.0

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