ASTROSAT CZTI

Data Quality Report

Orbit 22281

Creation date: 2024-06-27T18:38:57.752043
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_018T08_9000003296_22281cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22281cztM0_level2_quad_clean.evt
Size (bytes)511,845,12095,374,080
Size488.1 MB 91.0 MB
Events in quadrant A3,379,506615,969
Events in quadrant B3,486,810624,893
Events in quadrant C3,416,154593,677
Events in quadrant D4,743,436566,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146312
B0148132
C0147282
D0186452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69961702.429960%
B69972143.058454%
C69971812.586823%
D69974927.031585%

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 7041 6998 0 0 0.00% 0.00%
B 7042 6999 0 0 0.00% 0.00%
C 7042 6999 0 0 0.00% 0.00%
D 7042 6997 320 320 4.54% 4.57%

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 10400 53.01 876 854 180.1
A 3 137 7683 37.92 876 854 180.1
A 0 226 7549 37.18 876 854 180.1
B 4 171 33375 193.28 867 843 168.3
B 0 190 26597 153.01 867 843 168.3
B 12 111 20762 118.34 867 843 168.3
C 14 238 131045 660.23 832 838 197.2
C 10 22 42779 212.67 832 838 197.2
C 13 61 5965 26.0 832 838 197.2
D 1 52 1346909 6865.59 801 775 196.1
D 12 235 146898 745.26 801 775 196.1
D 12 227 73882 372.86 801 775 196.1

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