ASTROSAT CZTI

Data Quality Report

Orbit 18102

Creation date: 2024-06-27T17:44:57.367894
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/AS1A05_019T01_9000002688_18102cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18102cztM0_level2_quad_clean.evt
Size (bytes)592,505,28076,311,360
Size565.1 MB 72.8 MB
Events in quadrant A3,483,690477,531
Events in quadrant B3,612,086478,133
Events in quadrant C3,559,670456,772
Events in quadrant D6,796,499392,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149171
B0151541
C0150611
D0251741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7262751.032773%
B72621011.390801%
C72621081.487194%
D7263109715.103952%

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 9002 7264 1 1 0.01% 0.01%
B 9002 7264 2 2 0.02% 0.03%
C 9002 7264 0 0 0.00% 0.00%
D 9003 7264 954 954 10.60% 13.13%

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 4 2 18955 98.97 901 881 182.6
A 0 226 7799 37.88 901 881 182.6
A 3 137 6955 33.26 901 881 182.6
B 0 229 22843 125.91 898 873 174.5
B 12 111 20917 114.87 898 873 174.5
B 11 111 18335 100.07 898 873 174.5
C 14 238 133107 653.37 861 866 202.4
C 3 233 38761 187.23 861 866 202.4
C 9 160 13318 61.52 861 866 202.4
D 7 238 2466149 12562.11 803 778 196.3
D 11 176 721894 3674.39 803 778 196.3
D 13 104 255043 1295.59 803 778 196.3

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