ASTROSAT CZTI

Data Quality Report

Orbit 18819

Creation date: 2024-06-27T17:55:15.237120
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/AS1A05_173T01_9000002812_18819cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18819cztM0_level2_quad_clean.evt
Size (bytes)476,726,40081,025,920
Size454.6 MB 77.3 MB
Events in quadrant A3,519,797505,756
Events in quadrant B3,611,522508,712
Events in quadrant C3,564,543488,382
Events in quadrant D3,282,334479,414

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143972
B0146092
C0145012
D0140432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67511351.999704%
B67521532.265995%
C67521772.621445%
D67521051.555095%

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 7626 6752 3 3 0.04% 0.04%
B 7627 6753 16 16 0.21% 0.24%
C 7627 6752 19 19 0.25% 0.28%
D 7627 6753 3 3 0.04% 0.04%

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 8 144 117926 654.67 877 860 178.8
A 4 2 17335 92.13 877 860 178.8
A 13 254 11116 57.35 877 860 178.8
B 4 216 73538 435.62 865 845 166.9
B 6 36 41734 245.03 865 845 166.9
B 0 189 36332 212.66 865 845 166.9
C 0 207 165144 843.16 829 837 194.9
C 14 238 129977 662.69 829 837 194.9
C 3 233 36845 184.78 829 837 194.9
D 2 234 27579 128.27 852 827 208.6
D 7 38 17173 78.37 852 827 208.6
D 7 238 9273 40.49 852 827 208.6

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