ASTROSAT CZTI

Data Quality Report

Orbit 23418

Creation date: 2024-06-27T18:54:06.809367
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_127T02_9000003460_23418cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23418cztM0_level2_quad_clean.evt
Size (bytes)474,577,92093,962,880
Size452.6 MB 89.6 MB
Events in quadrant A3,434,482617,766
Events in quadrant B3,580,539626,057
Events in quadrant C3,481,901583,504
Events in quadrant D3,446,678577,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142382
B0147091
C0143631
D0142451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320801.265823%
B63201111.756329%
C63201502.373418%
D6320600.949367%

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 7570 6320 0 0 0.00% 0.00%
B 7570 6320 5 5 0.07% 0.08%
C 7570 6320 11 11 0.15% 0.17%
D 7570 6320 4 4 0.05% 0.06%

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 10045 51.6 891 877 177.7
A 0 226 7925 39.67 891 877 177.7
A 3 137 7198 35.58 891 877 177.7
B 0 190 75824 451.95 884 864 165.9
B 0 189 47380 280.46 884 864 165.9
B 12 111 19373 111.59 884 864 165.9
C 14 238 136912 710.62 831 838 191.5
C 10 9 94337 488.28 831 838 191.5
C 7 247 13882 68.12 831 838 191.5
D 1 52 217938 1065.8 850 826 203.7
D 2 234 25543 121.34 850 826 203.7
D 9 35 9110 40.67 850 826 203.7

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