ASTROSAT CZTI

Data Quality Report

Orbit 30866

Creation date: 2024-06-27T20:20:32.743900
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/AS1A10_071T46_9000004460_30866cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30866cztM0_level2_quad_clean.evt
Size (bytes)817,390,08092,977,920
Size779.5 MB 88.7 MB
Events in quadrant A3,827,357604,994
Events in quadrant B11,849,936558,256
Events in quadrant C4,245,145576,654
Events in quadrant D4,348,256575,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157671
B0401961
C0170591
D0172291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71692403.347747%
B7170257035.843794%
C71703284.574616%
D71702062.873082%

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 7374 7170 75 75 1.02% 1.05%
B 7375 7170 1104 1104 14.97% 15.40%
C 7375 7170 69 69 0.94% 0.96%
D 7375 7170 76 76 1.03% 1.06%

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 13 366611 2023.94 893 873 180.7
A 5 168 13798 71.52 893 873 180.7
A 13 254 13107 67.7 893 873 180.7
B 6 36 6656554 41544.63 817 793 160.2
B 6 159 1879984 11729.73 817 793 160.2
B 0 190 37591 229.69 817 793 160.2
C 2 16 759871 3805.39 845 852 199.5
C 14 238 136266 678.91 845 852 199.5
C 3 233 32750 159.92 845 852 199.5
D 8 195 576704 2815.39 860 842 204.5
D 12 233 415399 2026.77 860 842 204.5
D 2 250 34909 166.55 860 842 204.5

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