ASTROSAT CZTI

Data Quality Report

Orbit 23767

Creation date: 2024-06-27T18:58:30.340923
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/AS1C05_002T06_9000003522_23767cztM0_level2.evt modeM0/AS1C05_002T06_9000003522_23767cztM0_level2_quad_clean.evt
Size (bytes)379,071,36078,289,920
Size361.5 MB 74.7 MB
Events in quadrant A2,192,337517,905
Events in quadrant B2,285,766541,169
Events in quadrant C2,422,771518,854
Events in quadrant D4,284,153487,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092831
B095621
C099011
D0159841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4340531.221198%
B4340671.543779%
C43401022.350230%
D43402465.668203%

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 5690 4340 0 0 0.00% 0.00%
B 5690 4340 2 2 0.04% 0.05%
C 5690 4340 4 4 0.07% 0.09%
D 5689 4339 170 170 2.99% 3.92%

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 13 254 5990 47.41 568 557 114.6
A 0 226 4854 37.5 568 557 114.6
A 3 137 4729 36.41 568 557 114.6
B 12 111 12693 111.58 573 559 108.7
B 10 247 12424 109.11 573 559 108.7
B 11 111 11279 98.58 573 559 108.7
C 7 247 149226 1143.07 556 560 130.1
C 14 238 87952 671.94 556 560 130.1
C 1 16 11895 87.15 556 560 130.1
D 13 174 826295 6127.61 551 533 134.8
D 1 52 717711 5321.86 551 533 134.8
D 7 238 307042 2274.47 551 533 134.8

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