ASTROSAT CZTI

Data Quality Report

Orbit 15356

Creation date: 2024-06-27T17:07:21.697696
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/AS1A04_126T01_9000002262_15356cztM0_level2.evt modeM0/AS1A04_126T01_9000002262_15356cztM0_level2_quad_clean.evt
Size (bytes)482,042,880120,942,720
Size459.7 MB 115.3 MB
Events in quadrant A3,316,708821,853
Events in quadrant B3,552,957823,227
Events in quadrant C3,274,469807,752
Events in quadrant D4,022,437766,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140192
B0146491
C0138161
D0161751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371620.973160%
B63711221.914927%
C6371430.674933%
D63712714.253649%

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 7667 6372 10 10 0.13% 0.16%
B 7667 6373 28 28 0.37% 0.44%
C 7667 6373 0 0 0.00% 0.00%
D 7667 6372 222 222 2.90% 3.48%

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 9 143 63521 374.37 838 824 167.5
A 4 2 26524 153.46 838 824 167.5
A 0 226 7636 40.68 838 824 167.5
B 10 16 197714 1250.73 828 810 157.4
B 0 219 25651 157.79 828 810 157.4
B 0 189 21943 134.24 828 810 157.4
C 3 233 178591 985.52 793 798 180.4
C 13 61 5629 26.78 793 798 180.4
C 7 247 4333 19.59 793 798 180.4
D 1 255 393622 2044.48 798 776 192.1
D 2 33 197265 1022.58 798 776 192.1
D 1 20 175112 907.29 798 776 192.1

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