ASTROSAT CZTI

Data Quality Report

Orbit 50309

Creation date: 2025-01-16T15:50:24.087720
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/AS1C09_003T01_9000006442_50309cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50309cztM0_level2_quad_clean.evt
Size (bytes)1,321,073,28056,952,000
Size1.2 GB 54.3 MB
Events in quadrant A10,017,840451,921
Events in quadrant B5,818,341691,270
Events in quadrant C15,320,49863,274
Events in quadrant D17,186,30913,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347350
B0222800
C0505000
D0560043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7243257735.579180%
B72435958.214828%
C7243658290.873947%
D7242711498.232532%

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 7243 7243 2130 2130 29.41% 29.41%
B 7243 7243 386 386 5.33% 5.33%
C 7242 7242 4700 4700 64.90% 64.90%
D 7241 7238 6137 6137 84.75% 84.79%

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 98 4714205 28618.49 660 643 164.7
A 3 231 556169 3372.89 660 643 164.7
A 6 250 514286 3118.59 660 643 164.7
B 4 206 1603320 10101.43 741 717 158.7
B 1 238 373299 2348.44 741 717 158.7
B 10 254 299102 1880.76 741 717 158.7
C 15 197 6192904 103927.87 187 184 59.6
C 4 111 3332841 55929.53 187 184 59.6
C 15 230 1382151 23192.53 187 184 59.6
D 7 61 13662373 233226.18 189 181 58.6
D 2 37 1361581 23240.35 189 181 58.6
D 15 108 475849 8120.09 189 181 58.6

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