ASTROSAT CZTI

Data Quality Report

Orbit 21210

Creation date: 2024-06-27T18:24:59.465166
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/AS1A06_002T01_9000003134_21210cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21210cztM0_level2_quad_clean.evt
Size (bytes)775,114,56094,746,240
Size739.2 MB 90.4 MB
Events in quadrant A7,737,176553,105
Events in quadrant B4,236,649609,495
Events in quadrant C4,372,694583,958
Events in quadrant D6,567,395546,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282412
B0179043
C0183152
D0252022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8288179521.657819%
B82881832.208012%
C82881922.316602%
D82885556.696429%

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 8898 8290 1639 1639 18.42% 19.77%
B 8898 8290 25 25 0.28% 0.30%
C 8898 8290 22 22 0.25% 0.27%
D 8898 8290 384 384 4.32% 4.63%

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 15 236 4147153 22044.45 926 906 188.1
A 11 47 16795 84.48 926 906 188.1
A 13 254 9871 47.66 926 906 188.1
B 0 182 121111 611.62 1014 986 196.4
B 0 189 40364 200.49 1014 986 196.4
B 3 64 28857 141.91 1014 986 196.4
C 0 239 286775 1249.52 969 974 228.7
C 14 238 148773 646.18 969 974 228.7
C 3 233 134890 585.48 969 974 228.7
D 7 238 1146666 4838.57 959 930 236.8
D 1 52 756984 3192.9 959 930 236.8
D 13 174 461417 1944.69 959 930 236.8

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