ASTROSAT CZTI

Data Quality Report

Orbit 25568

Creation date: 2024-06-27T19:19:07.595484
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/AS1A09_043T02_9000003726_25568cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25568cztM0_level2_quad_clean.evt
Size (bytes)523,897,92091,071,360
Size499.6 MB 86.9 MB
Events in quadrant A3,296,136588,619
Events in quadrant B3,424,980592,566
Events in quadrant C3,505,999559,978
Events in quadrant D5,176,085541,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141780
B0143260
C0147580
D0200150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6827791.157170%
B6828981.435267%
C68281261.845343%
D68282994.379028%

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 7202 6828 0 0 0.00% 0.00%
B 7203 6829 0 0 0.00% 0.00%
C 7203 6829 5 5 0.07% 0.07%
D 7203 6829 187 187 2.60% 2.74%

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 10 17 41557 235.48 843 823 173.0
A 13 254 12049 64.9 843 823 173.0
A 3 137 7827 40.49 843 823 173.0
B 0 219 89264 551.26 833 812 160.5
B 0 190 31806 193.17 833 812 160.5
B 12 111 19062 113.74 833 812 160.5
C 3 233 147369 778.34 801 808 188.3
C 14 238 125200 660.6 801 808 188.3
C 0 207 104236 549.27 801 808 188.3
D 1 52 1194084 5951.22 808 785 200.5
D 8 195 733100 3652.2 808 785 200.5
D 7 38 70374 347.05 808 785 200.5

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