ASTROSAT CZTI

Data Quality Report

Orbit 24962

Creation date: 2024-06-27T19:12:00.144925
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/AS1T03_200T01_9000003654_24962cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24962cztM0_level2_quad_clean.evt
Size (bytes)752,719,680181,316,160
Size717.8 MB 172.9 MB
Events in quadrant A4,420,4771,233,969
Events in quadrant B5,424,2141,232,638
Events in quadrant C4,810,2371,183,283
Events in quadrant D7,466,3491,150,977

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201601
B0226741
C0206551
D0293331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9969400.401244%
B99701811.815446%
C9970880.882648%
D99703563.570712%

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 10459 9970 0 0 0.00% 0.00%
B 10460 9971 89 89 0.85% 0.89%
C 10460 9971 2 2 0.02% 0.02%
D 10460 9971 263 263 2.51% 2.64%

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 16283 65.82 1143 1118 230.4
A 3 137 10209 39.46 1143 1118 230.4
A 0 226 9988 38.5 1143 1118 230.4
B 0 229 307092 1440.87 1132 1105 212.4
B 10 246 196237 918.86 1132 1105 212.4
B 3 64 192941 903.34 1132 1105 212.4
C 7 247 286183 1114.79 1097 1103 255.7
C 14 238 175329 681.3 1097 1103 255.7
C 2 16 31696 119.63 1097 1103 255.7
D 1 52 1714764 6413.46 1104 1070 267.2
D 1 3 971227 3630.79 1104 1070 267.2
D 8 195 492296 1838.4 1104 1070 267.2

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