ASTROSAT CZTI

Data Quality Report

Orbit 25886

Creation date: 2024-06-27T19:22:29.353143
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/AS1A07_068T01_9000003756_25886cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25886cztM0_level2_quad_clean.evt
Size (bytes)597,934,080105,661,440
Size570.2 MB 100.8 MB
Events in quadrant A4,563,959668,252
Events in quadrant B4,424,955671,938
Events in quadrant C4,130,724640,262
Events in quadrant D4,426,939643,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185470
B0184340
C0177410
D0187780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82841261.521004%
B82841832.209078%
C82851061.279421%
D8285570.687990%

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 9119 8286 49 49 0.54% 0.59%
B 9119 8286 87 87 0.95% 1.05%
C 9120 8287 12 12 0.13% 0.14%
D 9120 8287 33 33 0.36% 0.40%

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 692065 3413.36 1004 983 202.5
A 13 254 13547 62.06 1004 983 202.5
A 3 137 9515 42.14 1004 983 202.5
B 10 245 380143 1974.05 992 967 192.1
B 4 171 114799 592.63 992 967 192.1
B 12 111 23956 119.68 992 967 192.1
C 3 233 264849 1176.17 952 953 224.4
C 14 238 151307 670.12 952 953 224.4
C 7 238 7129 27.53 952 953 224.4
D 1 52 450225 1941.49 967 942 231.4
D 7 80 177673 763.71 967 942 231.4
D 5 223 110093 471.68 967 942 231.4

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