ASTROSAT CZTI

Data Quality Report

Orbit 12782

Creation date: 2024-06-27T16:32:10.757339
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/AS1A04_110T04_9000001886_12782cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12782cztM0_level2_quad_clean.evt
Size (bytes)479,125,440115,729,920
Size456.9 MB 110.4 MB
Events in quadrant A2,897,459793,328
Events in quadrant B4,038,883758,011
Events in quadrant C2,916,774790,936
Events in quadrant D4,251,089744,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124592
B0158591
C0126731
D0165841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978921.538976%
B59785609.367681%
C5978961.605888%
D59782424.048177%

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 7129 5980 0 0 0.00% 0.00%
B 7129 5980 313 313 4.39% 5.23%
C 7129 5980 12 12 0.17% 0.20%
D 7129 5980 143 143 2.01% 2.39%

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 12 189 85551 582.3 722 706 145.7
A 15 174 22239 147.78 722 706 145.7
A 8 15 12083 78.08 722 706 145.7
B 4 239 1217706 9577.58 684 668 127.1
B 0 219 75581 589.53 684 668 127.1
B 3 64 42910 332.43 684 668 127.1
C 15 208 136658 835.88 709 712 162.6
C 14 234 12148 70.32 709 712 162.6
C 13 61 5264 27.99 709 712 162.6
D 1 52 1029224 6121.69 699 678 168.0
D 8 195 333353 1980.01 699 678 168.0
D 10 157 178984 1061.24 699 678 168.0

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