ASTROSAT CZTI

Data Quality Report

Orbit 31770

Creation date: 2024-06-27T20:32:30.559552
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_109T01_9000004638_31770cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31770cztM0_level2_quad_clean.evt
Size (bytes)636,220,800105,701,760
Size606.7 MB 100.8 MB
Events in quadrant A3,792,363701,837
Events in quadrant B5,671,574694,162
Events in quadrant C5,135,226662,202
Events in quadrant D4,195,527655,496

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156042
B0216992
C0201322
D0171942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69941371.958822%
B69952293.273767%
C69954366.233024%
D69951051.501072%

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 9129 6996 0 0 0.00% 0.00%
B 9130 6997 13 13 0.14% 0.19%
C 9130 6997 79 79 0.87% 1.13%
D 9130 6997 6 6 0.07% 0.09%

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 17323 85.07 976 960 192.3
A 13 254 12583 60.43 976 960 192.3
A 13 210 12512 60.06 976 960 192.3
B 6 159 1788382 9949.1 947 926 179.7
B 10 245 99197 546.98 947 926 179.7
B 12 111 21949 117.01 947 926 179.7
C 0 10 861776 4093.29 901 909 210.3
C 3 233 534049 2535.0 901 909 210.3
C 14 238 147118 695.2 901 909 210.3
D 8 195 516779 2348.32 934 912 219.7
D 12 227 55173 247.01 934 912 219.7
D 2 250 45810 204.38 934 912 219.7

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