ASTROSAT CZTI

Data Quality Report

Orbit 23002

Creation date: 2024-06-27T18:48:34.058984
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/AS1A08_004T03_9000003400_23002cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23002cztM0_level2_quad_clean.evt
Size (bytes)477,322,56070,104,960
Size455.2 MB 66.9 MB
Events in quadrant A3,273,675426,481
Events in quadrant B3,405,314433,035
Events in quadrant C3,367,640411,018
Events in quadrant D3,970,040401,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135362
B0139172
C0138232
D0159032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463711.098561%
B64631091.686523%
C64631342.073341%
D64631502.320904%

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 7573 6464 0 0 0.00% 0.00%
B 7573 6464 8 8 0.11% 0.12%
C 7573 6464 4 4 0.05% 0.06%
D 7573 6464 70 70 0.92% 1.08%

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 9417 50.89 849 833 168.7
A 3 137 7276 38.19 849 833 168.7
A 0 226 7126 37.3 849 833 168.7
B 4 216 47020 286.67 848 827 161.1
B 0 189 35986 218.19 848 827 161.1
B 12 111 19570 116.32 848 827 161.1
C 14 238 130002 685.33 809 815 188.5
C 7 247 45182 235.37 809 815 188.5
C 0 10 32107 166.0 809 815 188.5
D 1 52 417271 2114.03 814 793 197.0
D 13 153 158283 799.41 814 793 197.0
D 2 152 133113 671.65 814 793 197.0

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