ASTROSAT CZTI

Data Quality Report

Orbit 01792

Creation date: 2024-06-27T14:12:45.791834
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/AS1G02_020T01_9000000296_01792cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01792cztM0_level2_quad_clean.evt
Size (bytes)1,026,486,72067,317,120
Size978.9 MB 64.2 MB
Events in quadrant A7,899,656395,461
Events in quadrant B8,082,889402,547
Events in quadrant C7,508,281397,215
Events in quadrant D7,164,655389,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280622
B0286552
C0269772
D0259312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507130.199785%
B6507170.261257%
C6507100.153681%
D6507300.461042%

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 7617 6508 162 162 2.13% 2.49%
B 7617 6508 187 187 2.46% 2.87%
C 7617 6508 138 138 1.81% 2.12%
D 7617 6508 127 127 1.67% 1.95%

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 0 231 164546 336.2 2019 2037 483.4
A 13 9 17372 31.72 2019 2037 483.4
A 14 218 4814 5.75 2019 2037 483.4
B 0 220 11664 18.97 2129 2139 502.2
B 4 200 6204 8.09 2129 2139 502.2
B 0 229 6045 7.78 2129 2139 502.2
C 10 82 73541 135.82 1904 1970 527.0
C 9 236 6109 7.85 1904 1970 527.0
C -1 -1 -1 -1.0 1904 1970 527.0
D 10 199 94993 164.49 1826 1891 566.0
D 7 85 88933 153.78 1826 1891 566.0
D 13 169 49403 83.94 1826 1891 566.0

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