ASTROSAT CZTI

Data Quality Report

Orbit 21099

Creation date: 2024-06-27T18:23:32.485703
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/AS1A05_163T01_9000003118_21099cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21099cztM0_level2_quad_clean.evt
Size (bytes)516,113,28095,754,240
Size492.2 MB 91.3 MB
Events in quadrant A3,176,990631,132
Events in quadrant B3,558,146630,208
Events in quadrant C3,325,265607,465
Events in quadrant D5,129,184577,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137081
B0147851
C0140861
D0196171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6510450.691244%
B65111071.643373%
C6511751.151897%
D65112734.192904%

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 7555 6511 1 1 0.01% 0.02%
B 7556 6512 41 41 0.54% 0.63%
C 7556 6512 6 6 0.08% 0.09%
D 7556 6512 203 203 2.69% 3.12%

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 15 192 18540 108.95 814 798 162.9
A 5 16 12560 72.23 814 798 162.9
A 13 254 9272 52.04 814 798 162.9
B 7 220 105487 679.87 805 783 154.0
B 3 64 102086 657.79 805 783 154.0
B 0 228 64917 416.44 805 783 154.0
C 7 221 142743 773.53 779 785 183.5
C 14 238 121062 655.39 779 785 183.5
C 9 54 18170 94.73 779 785 183.5
D 1 20 957997 5126.63 777 756 186.7
D 1 52 681530 3645.97 777 756 186.7
D 1 239 428345 2290.01 777 756 186.7

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