ASTROSAT CZTI

Data Quality Report

Orbit 24852

Creation date: 2024-06-27T19:10:38.649500
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/AS1A08_003T06_9000003636_24852cztM0_level2.evt modeM0/AS1A08_003T06_9000003636_24852cztM0_level2_quad_clean.evt
Size (bytes)501,212,16081,676,800
Size478.0 MB 77.9 MB
Events in quadrant A3,878,725523,705
Events in quadrant B3,362,586543,126
Events in quadrant C4,086,295493,639
Events in quadrant D3,430,378479,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151872
B0136342
C0163092
D0140192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62122303.702511%
B6212320.515132%
C62121582.543464%
D6212520.837090%

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 7563 6214 207 207 2.74% 3.33%
B 7563 6214 0 0 0.00% 0.00%
C 7563 6214 69 69 0.91% 1.11%
D 7563 6214 40 40 0.53% 0.64%

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 6 16 644248 3851.77 839 827 167.0
A 13 254 9603 52.54 839 827 167.0
A 0 226 7263 38.53 839 827 167.0
B 12 111 19136 114.06 852 834 160.5
B 11 111 17236 102.22 852 834 160.5
B 14 111 16054 94.85 852 834 160.5
C 2 16 457306 2469.8 799 807 184.8
C 7 247 227736 1227.75 799 807 184.8
C 10 91 151043 812.82 799 807 184.8
D 1 52 358673 1853.33 801 781 193.1
D 2 234 21017 104.79 801 781 193.1
D 8 195 20069 99.88 801 781 193.1

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