ASTROSAT CZTI

Data Quality Report

Orbit 23477

Creation date: 2024-06-27T18:54:56.486590
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_148T02_9000003474_23477cztM0_level2.evt modeM0/AS1A07_148T02_9000003474_23477cztM0_level2_quad_clean.evt
Size (bytes)605,329,920100,085,760
Size577.3 MB 95.4 MB
Events in quadrant A3,309,594667,342
Events in quadrant B3,474,148681,202
Events in quadrant C3,528,743656,647
Events in quadrant D7,600,980593,201

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133972
B0140342
C0142202
D0267132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197120.193642%
B6197440.710021%
C6196731.178179%
D6196107117.285345%

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 7557 6198 0 0 0.00% 0.00%
B 7557 6198 5 5 0.07% 0.08%
C 7556 6197 6 6 0.08% 0.10%
D 7556 6197 971 971 12.85% 15.67%

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 10415 56.81 857 841 168.5
A 0 226 7613 40.18 857 841 168.5
A 3 137 6767 35.16 857 841 168.5
B 0 189 95877 604.09 850 831 157.3
B 0 230 47643 297.52 850 831 157.3
B 12 111 18103 109.78 850 831 157.3
C 14 238 134531 686.52 838 847 194.7
C 7 247 112801 574.92 838 847 194.7
C 10 9 8390 38.73 838 847 194.7
D 7 238 4577354 24530.97 777 758 186.6
D 1 52 57424 303.73 777 758 186.6
D 2 234 21979 113.75 777 758 186.6

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