ASTROSAT CZTI

Data Quality Report

Orbit 26158

Creation date: 2024-06-27T19:25:30.382150
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_138T04_9000003776_26158cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26158cztM0_level2_quad_clean.evt
Size (bytes)515,185,92091,635,840
Size491.3 MB 87.4 MB
Events in quadrant A3,488,199592,913
Events in quadrant B3,173,891606,185
Events in quadrant C3,859,163567,034
Events in quadrant D4,654,812570,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141940
B0131750
C0153370
D0179070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286841.336303%
B6287721.145220%
C62872784.421823%
D62872113.356132%

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 7371 6287 34 34 0.46% 0.54%
B 7372 6287 0 0 0.00% 0.00%
C 7372 6287 129 129 1.75% 2.05%
D 7372 6287 171 171 2.32% 2.72%

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 13 376217 2325.11 807 790 161.5
A 13 254 9135 51.68 807 790 161.5
A 3 137 7293 40.27 807 790 161.5
B 0 245 22588 142.43 797 776 153.1
B 12 111 18205 113.81 797 776 153.1
B 11 111 16611 103.4 797 776 153.1
C 2 16 694123 3907.39 764 771 177.4
C 14 238 122177 684.18 764 771 177.4
C 3 233 59207 329.32 764 771 177.4
D 1 52 1297793 6954.34 787 771 186.5
D 12 233 360086 1926.57 787 771 186.5
D 2 234 24046 124.8 787 771 186.5

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