ASTROSAT CZTI

Data Quality Report

Orbit 21984

Creation date: 2024-06-27T18:34:53.906394
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/AS1A07_094T01_9000003248_21984cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21984cztM0_level2_quad_clean.evt
Size (bytes)567,362,88072,538,560
Size541.1 MB 69.2 MB
Events in quadrant A3,349,766452,222
Events in quadrant B3,499,554458,132
Events in quadrant C3,308,587434,290
Events in quadrant D6,588,910402,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139062
B0143942
C0137472
D0239492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437701.087463%
B64371051.631195%
C6437931.444772%
D643774311.542644%

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 7602 6437 0 0 0.00% 0.00%
B 7602 6437 14 14 0.18% 0.22%
C 7602 6437 0 0 0.00% 0.00%
D 7602 6437 755 755 9.93% 11.73%

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 11400 61.45 867 849 171.7
A 0 226 7668 39.72 867 849 171.7
A 3 137 7034 36.02 867 849 171.7
B 3 64 60708 370.67 858 840 161.5
B 0 230 29931 180.11 858 840 161.5
B 6 36 21508 127.96 858 840 161.5
C 14 238 129231 682.24 813 820 188.2
C 13 61 5786 26.38 813 820 188.2
C 0 10 4932 21.85 813 820 188.2
D 1 52 1881923 9675.94 800 776 194.4
D 7 238 1043635 5364.09 800 776 194.4
D 7 223 253384 1299.32 800 776 194.4

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