ASTROSAT CZTI

Data Quality Report

Orbit 25220

Creation date: 2024-06-27T19:15:13.086703
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/AS1A07_097T01_9000003692_25220cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25220cztM0_level2_quad_clean.evt
Size (bytes)1,129,884,480171,368,640
Size1.1 GB 163.4 MB
Events in quadrant A6,488,1901,108,006
Events in quadrant B9,736,2441,040,858
Events in quadrant C7,058,5251,071,253
Events in quadrant D10,031,4541,044,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278870
B0379140
C0294390
D0388830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133841401.046025%
B13384179013.374178%
C133842852.129408%
D133847135.327256%

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 13979 13387 0 0 0.00% 0.00%
B 13979 13386 886 886 6.34% 6.62%
C 13979 13387 1 1 0.01% 0.01%
D 13979 13387 421 421 3.01% 3.14%

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 13 254 20670 55.93 1680 1644 340.2
A 3 137 15526 40.81 1680 1644 340.2
A 0 226 14292 37.18 1680 1644 340.2
B 3 64 3578461 12174.07 1547 1510 293.8
B 0 190 62227 206.65 1547 1510 293.8
B 12 111 36977 120.71 1547 1510 293.8
C 7 247 444397 1172.37 1604 1619 377.7
C 14 238 253587 667.15 1604 1619 377.7
C 2 16 75329 195.17 1604 1619 377.7
D 1 52 1205551 2828.97 1589 1558 425.6
D 10 70 1036556 2431.89 1589 1558 425.6
D 8 195 631221 1479.49 1589 1558 425.6

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