ASTROSAT CZTI

Data Quality Report

Orbit 46555

Creation date: 2024-06-27T23:24:41.140979
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/AS1C03_005T02_9000006230_46555cztM0_level2.fits modeM0/AS1C03_005T02_9000006230_46555cztM0_level2_quad_clean.evt
Size (bytes)961,868,160152,763,840
Size917.3 MB 145.7 MB
Events in quadrant A9,491,0391,049,718
Events in quadrant B5,298,1791,082,769
Events in quadrant C11,383,774827,410
Events in quadrant D8,640,373955,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344981
B0227481
C0409275
D0326703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102495195.063909%
B102493433.346668%
C10246252624.653523%
D102475965.816336%

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 10634 10249 53 53 0.50% 0.52%
B 10634 10249 18 18 0.17% 0.18%
C 10633 10247 2344 2344 22.04% 22.87%
D 10633 10248 407 407 3.83% 3.97%

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 10 83 4713826 19879.46 1146 1118 237.1
A 14 235 207280 869.64 1146 1118 237.1
A 9 191 22824 91.56 1146 1118 237.1
B 2 2 370424 1634.05 1146 1110 226.0
B 5 255 128722 564.63 1146 1110 226.0
B 0 245 79129 345.2 1146 1110 226.0
C 1 241 7053951 29648.2 1020 1024 237.9
C 14 254 239354 1001.86 1020 1024 237.9
C 3 233 31750 129.16 1020 1024 237.9
D 1 52 1880173 6692.2 1121 1081 280.8
D 2 120 878718 3125.62 1121 1081 280.8
D 8 176 414638 1472.84 1121 1081 280.8

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