ASTROSAT CZTI

Data Quality Report

Orbit 24786

Creation date: 2024-06-27T19:09:53.620743
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_147T01_9000003624_24786cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24786cztM0_level2_quad_clean.evt
Size (bytes)130,636,80026,147,520
Size124.6 MB 24.9 MB
Events in quadrant A680,603184,226
Events in quadrant B1,618,531151,657
Events in quadrant C734,885175,863
Events in quadrant D823,114173,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028570
B057070
C030180
D033360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141900.000000%
B142038627.183099%
C142070.492958%
D142020.140845%

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 1419 1419 0 0 0.00% 0.00%
B 1420 1420 288 288 20.28% 20.28%
C 1420 1420 0 0 0.00% 0.00%
D 1420 1420 1 1 0.07% 0.07%

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 1893 45.89 176 172 37.5
A 3 137 1642 39.2 176 172 37.5
A 0 226 1507 35.6 176 172 37.5
B 3 64 1049537 34984.74 143 140 30.0
B 12 111 3360 107.35 143 140 30.0
B 11 111 3065 97.51 143 140 30.0
C 8 208 27211 659.32 169 170 41.0
C 14 238 26581 643.96 169 170 41.0
C 10 91 18536 447.8 169 170 41.0
D 1 52 128648 2923.8 173 168 43.9
D 8 195 30787 696.79 173 168 43.9
D 2 234 5785 127.83 173 168 43.9

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