ASTROSAT CZTI

Data Quality Report

Orbit 15960

Creation date: 2024-06-27T17:15:43.823141
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/AS1T02_087T01_9000002352_15960cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15960cztM0_level2_quad_clean.evt
Size (bytes)411,500,16093,818,880
Size392.4 MB 89.5 MB
Events in quadrant A3,012,541618,204
Events in quadrant B3,147,844621,995
Events in quadrant C3,006,123590,785
Events in quadrant D2,878,524582,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128352
B0131411
C0128081
D0126861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6135671.092095%
B6135761.238794%
C6135881.434393%
D6135600.977995%

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 7096 6136 0 0 0.00% 0.00%
B 7096 6136 6 6 0.08% 0.10%
C 7096 6136 0 0 0.00% 0.00%
D 7096 6136 7 7 0.10% 0.11%

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 15 239 61466 392.14 762 744 154.8
A 13 210 22029 137.46 762 744 154.8
A 0 226 6820 39.24 762 744 154.8
B 5 65 32802 220.97 756 739 145.1
B 4 216 27442 184.03 756 739 145.1
B 0 189 25215 168.69 756 739 145.1
C 14 238 110092 648.8 720 725 168.6
C 3 233 80130 471.05 720 725 168.6
C 9 236 6696 35.42 720 725 168.6
D 2 120 28802 155.62 737 716 180.5
D 2 152 28145 151.98 737 716 180.5
D 2 234 25852 139.28 737 716 180.5

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