ASTROSAT CZTI

Data Quality Report

Orbit 26107

Creation date: 2024-06-27T19:24:47.082159
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_018T01_9000003774_26107cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26107cztM0_level2_quad_clean.evt
Size (bytes)535,826,88091,140,480
Size511.0 MB 86.9 MB
Events in quadrant A3,157,277599,052
Events in quadrant B3,316,842608,505
Events in quadrant C3,580,138569,128
Events in quadrant D5,720,054517,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136010
B0140170
C0148850
D0214420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6679240.359335%
B6678430.643905%
C66781141.707098%
D667869810.452231%

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 7629 6680 1 1 0.01% 0.01%
B 7628 6678 4 4 0.05% 0.06%
C 7628 6678 43 43 0.56% 0.64%
D 7628 6678 646 646 8.47% 9.67%

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 11061 61.87 818 801 165.8
A 3 137 7656 41.34 818 801 165.8
A 0 226 6967 37.18 818 801 165.8
B 0 190 53134 334.61 814 794 156.4
B 5 172 35048 218.99 814 794 156.4
B 3 64 22910 141.39 814 794 156.4
C 2 16 381845 2083.9 774 779 182.9
C 14 238 124662 677.47 774 779 182.9
C 3 233 39937 214.14 774 779 182.9
D 1 52 2678697 15002.07 742 723 178.5
D 12 233 155098 864.81 742 723 178.5
D 7 223 33375 182.92 742 723 178.5

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