ASTROSAT CZTI

Data Quality Report

Orbit 31975

Creation date: 2024-06-27T20:34:58.838058
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/AS1C06_010T03_9000004672_31975cztM0_level2.evt modeM0/AS1C06_010T03_9000004672_31975cztM0_level2_quad_clean.evt
Size (bytes)188,804,16036,051,840
Size180.1 MB 34.4 MB
Events in quadrant A843,234264,186
Events in quadrant B2,039,663229,697
Events in quadrant C1,069,120246,099
Events in quadrant D1,664,593242,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034011
B069991
C041492
D060031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1462151.025992%
B146247832.694938%
C1461956.502396%
D1461261.779603%

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 1462 1462 0 0 0.00% 0.00%
B 1461 1461 380 380 26.01% 26.01%
C 1461 1461 47 47 3.22% 3.22%
D 1461 1461 2 2 0.14% 0.14%

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 2604 54.53 218 215 43.8
A 3 137 1859 37.53 218 215 43.8
A 0 226 1855 37.44 218 215 43.8
B 10 245 938961 26027.82 189 185 36.1
B 6 159 341689 9468.29 189 185 36.1
B 0 190 9143 248.36 189 185 36.1
C 0 10 241402 5227.32 197 198 46.1
C 14 238 34309 739.25 197 198 46.1
C 4 175 17537 375.77 197 198 46.1
D 11 164 802367 16506.87 204 199 48.6
D 8 195 51310 1051.75 204 199 48.6
D 7 238 36230 741.44 204 199 48.6

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