ASTROSAT CZTI

Data Quality Report

Orbit 06736

Creation date: 2024-06-27T15:10:58.247139
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/AS1C02_003T01_9000000924_06736cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06736cztM0_level2_quad_clean.evt
Size (bytes)75,121,92018,063,360
Size71.6 MB 17.2 MB
Events in quadrant A531,898118,832
Events in quadrant B502,545121,196
Events in quadrant C522,282117,986
Events in quadrant D648,619112,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022511
B021911
C022421
D025681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A976969.836066%
B97610811.065574%
C9769810.040984%
D9769810.040984%

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 1096 977 6 6 0.55% 0.61%
B 1096 977 0 0 0.00% 0.00%
C 1096 977 0 0 0.00% 0.00%
D 1096 977 1 1 0.09% 0.10%

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 14 111 23199 802.52 127 123 28.8
A 8 15 11121 382.48 127 123 28.8
A 13 251 7966 272.76 127 123 28.8
B 12 111 2832 99.11 128 124 27.3
B 11 111 2187 75.5 128 124 27.3
B 4 81 1582 53.36 128 124 27.3
C 9 16 26089 827.17 125 125 31.4
C 8 128 3214 98.41 125 125 31.4
C 8 112 1251 35.87 125 125 31.4
D 8 195 86785 2698.55 124 119 32.1
D 2 152 60578 1882.53 124 119 32.1
D 14 34 6586 201.37 124 119 32.1

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