ASTROSAT CZTI

Data Quality Report

Orbit 15809

Creation date: 2024-06-27T17:13:51.152571
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/AS1A04_026T01_9000002342_15809cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15809cztM0_level2_quad_clean.evt
Size (bytes)15,004,8004,636,800
Size14.3 MB 4.4 MB
Events in quadrant A129,31727,924
Events in quadrant B96,78424,809
Events in quadrant C105,25730,768
Events in quadrant D102,98431,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04642
B04743
C04543
D04642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055
B055
C066
D066

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052124649
B056285191
C047284211
D046224083

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24241.652893%
B20800.000000%
C25800.000000%
D27000.000000%

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 577 365 1 1 0.17% 0.27%
B 2824 320 0 0 0.00% 0.00%
C 591 373 0 0 0.00% 0.00%
D 2814 395 0 0 0.00% 0.00%

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 15 239 31719 4456.82 25 24 7.1
A 0 226 216 27.0 25 24 7.1
A 3 137 206 25.59 25 24 7.1
B 4 173 5364 864.94 22 21 6.2
B 10 245 4127 664.69 22 21 6.2
B 0 229 845 133.39 22 21 6.2
C 14 238 4014 519.74 25 25 7.7
C 3 233 944 119.74 25 25 7.7
C 13 61 208 23.84 25 25 7.7
D 2 234 1032 115.82 26 25 8.7
D 5 51 645 71.31 26 25 8.7
D 14 226 294 30.94 26 25 8.7

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