ASTROSAT CZTI

Data Quality Report

Orbit 24265

Creation date: 2024-06-27T19:04:07.351278
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/AS1A07_118T01_9000003586_24265cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24265cztM0_level2_quad_clean.evt
Size (bytes)558,216,00084,450,240
Size532.4 MB 80.5 MB
Events in quadrant A3,386,716523,102
Events in quadrant B3,445,355537,181
Events in quadrant C3,860,172511,083
Events in quadrant D5,732,126491,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146241
B0146801
C0159021
D0217871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70991972.775039%
B71001952.746479%
C71002413.394366%
D71004756.690141%

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 7269 7099 0 0 0.00% 0.00%
B 7270 7100 0 0 0.00% 0.00%
C 7270 7100 18 18 0.25% 0.25%
D 7270 7100 292 292 4.02% 4.11%

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 11419 59.04 877 855 178.9
A 3 137 8135 40.69 877 855 178.9
A 0 226 7499 37.13 877 855 178.9
B 12 111 20540 116.24 871 846 169.4
B 12 17 19047 107.43 871 846 169.4
B 11 111 18610 104.85 871 846 169.4
C 2 16 398794 1995.09 843 850 199.5
C 14 238 129309 644.03 843 850 199.5
C 7 247 39097 191.75 843 850 199.5
D 8 195 1467036 7085.6 846 821 206.9
D 12 233 617428 2979.8 846 821 206.9
D 1 52 381392 1839.14 846 821 206.9

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