ASTROSAT CZTI

Data Quality Report

Orbit 31281

Creation date: 2024-06-27T20:26:06.534609
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_024T01_9000004530_31281cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31281cztM0_level2_quad_clean.evt
Size (bytes)584,017,92075,012,480
Size557.0 MB 71.5 MB
Events in quadrant A3,550,316474,716
Events in quadrant B5,420,179465,184
Events in quadrant C4,237,906437,340
Events in quadrant D4,047,445448,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143711
B0201031
C0167421
D0160781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63821031.613914%
B63832233.493655%
C63832654.151653%
D63831041.629328%

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 7672 6383 0 0 0.00% 0.00%
B 7673 6384 19 19 0.25% 0.30%
C 7673 6384 12 12 0.16% 0.19%
D 7673 6384 17 17 0.22% 0.27%

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 14002 73.12 920 905 179.1
A 3 137 8536 42.6 920 905 179.1
A 0 226 7841 38.72 920 905 179.1
B 6 159 1676284 9995.58 892 872 167.6
B 4 80 116537 690.06 892 872 167.6
B 10 245 80653 475.98 892 872 167.6
C 3 233 561001 2871.86 853 860 195.0
C 0 10 168344 858.7 853 860 195.0
C 14 238 151691 773.32 853 860 195.0
D 8 195 589887 2723.71 879 860 216.3
D 2 250 105058 481.82 879 860 216.3
D 2 234 24841 110.89 879 860 216.3

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