ASTROSAT CZTI

Data Quality Report

Orbit 31749

Creation date: 2024-06-27T20:32:15.465829
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/AS1T04_034T01_9000004632_31749cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31749cztM0_level2_quad_clean.evt
Size (bytes)843,410,880111,741,120
Size804.3 MB 106.6 MB
Events in quadrant A8,632,868650,069
Events in quadrant B6,273,766744,714
Events in quadrant C5,384,768717,289
Events in quadrant D4,714,440718,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311531
B0246181
C0211491
D0192171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7956194624.459527%
B79574665.856479%
C79575797.276612%
D79571271.596079%

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 7956 7956 972 972 12.22% 12.22%
B 7957 7957 4 4 0.05% 0.05%
C 7957 7957 165 165 2.07% 2.07%
D 7957 7957 15 15 0.19% 0.19%

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 5111557 27540.5 913 893 185.6
A 13 254 13482 67.84 913 893 185.6
A 3 137 9686 47.38 913 893 185.6
B 6 159 2225652 11346.26 1000 972 196.1
B 12 111 24905 122.06 1000 972 196.1
B 0 190 24784 121.45 1000 972 196.1
C 0 10 1283187 5562.03 968 973 230.5
C 14 238 153270 660.64 968 973 230.5
C 3 233 149358 643.67 968 973 230.5
D 8 195 793063 3317.03 987 961 238.8
D 1 52 54361 223.62 987 961 238.8
D 2 250 54014 222.17 987 961 238.8

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