ASTROSAT CZTI

Data Quality Report

Orbit 16541

Creation date: 2024-06-27T17:24:08.924262
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/AS1T03_018T01_9000002442_16541cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16541cztM0_level2_quad_clean.evt
Size (bytes)463,233,60088,856,640
Size441.8 MB 84.7 MB
Events in quadrant A3,179,648565,055
Events in quadrant B3,556,361578,166
Events in quadrant C3,494,927558,980
Events in quadrant D3,361,595540,353

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136783
B0146902
C0148052
D0141672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429400.622181%
B6429600.933271%
C6429921.431016%
D6430741.150855%

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 7545 6430 1 1 0.01% 0.02%
B 7545 6430 10 10 0.13% 0.16%
C 7545 6430 2 2 0.03% 0.03%
D 7546 6431 56 56 0.74% 0.87%

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 3 1 55049 338.2 795 779 160.5
A 15 174 55046 338.18 795 779 160.5
A 15 223 8929 50.79 795 779 160.5
B 15 35 128446 834.66 799 780 153.0
B 7 220 54823 353.32 799 780 153.0
B 0 229 50051 322.13 799 780 153.0
C 3 233 396605 2225.95 761 768 177.8
C 14 238 117348 655.58 761 768 177.8
C 7 247 13483 71.5 761 768 177.8
D 1 52 208796 1109.46 766 743 187.5
D 10 70 117652 623.43 766 743 187.5
D 9 85 79348 419.17 766 743 187.5

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