ASTROSAT CZTI

Data Quality Report

Orbit 36970

Creation date: 2024-06-27T21:33:43.360702
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/AS1C07_001T10_9000005252_36970cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36970cztM0_level2_quad_clean.evt
Size (bytes)838,739,520155,537,280
Size799.9 MB 148.3 MB
Events in quadrant A4,957,0181,057,016
Events in quadrant B7,686,535978,981
Events in quadrant C5,091,0041,064,641
Events in quadrant D7,065,931992,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205023
B0287772
C0204282
D0268622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88951201.349073%
B889592010.342889%
C88951161.304103%
D88957868.836425%

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 12931 8897 91 91 0.70% 1.02%
B 12931 8897 748 748 5.78% 8.41%
C 12931 8897 93 93 0.72% 1.05%
D 12931 8897 691 691 5.34% 7.77%

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 10 83 362815 1769.66 1030 1013 204.4
A 13 248 232773 1133.59 1030 1013 204.4
A 12 189 189757 923.19 1030 1013 204.4
B 5 184 2955572 16700.47 977 954 176.9
B 0 221 187278 1053.16 977 954 176.9
B 0 229 143836 807.62 977 954 176.9
C 15 214 382985 1631.31 1029 1040 234.1
C 0 10 240438 1022.48 1029 1040 234.1
C 14 254 139967 593.36 1029 1040 234.1
D 12 17 1866488 7086.95 983 965 263.2
D 13 171 391379 1483.15 983 965 263.2
D 13 200 291986 1105.56 983 965 263.2

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