ASTROSAT CZTI

Data Quality Report

Orbit 01104

Creation date: 2024-06-27T14:07:30.305112
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/AS1P01_997T02_9000000212_01104cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01104cztM0_level2_quad_clean.evt
Size (bytes)1,187,516,160105,978,240
Size1.1 GB 101.1 MB
Events in quadrant A8,553,656696,650
Events in quadrant B9,006,211694,480
Events in quadrant C8,707,270671,826
Events in quadrant D9,227,138652,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304312
B0317791
C0308991
D0325401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7106170.239234%
B7106250.351815%
C7106140.197017%
D71063635.108359%

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 7196 7109 311 311 4.32% 4.37%
B 7196 7109 373 373 5.18% 5.25%
C 7196 7109 332 332 4.61% 4.67%
D 7196 7109 891 891 12.38% 12.53%

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 12 243 112842 209.56 2197 2216 527.9
A 11 79 10846 16.35 2197 2216 527.9
A 13 9 9016 12.88 2197 2216 527.9
B 0 137 167390 304.97 2285 2291 541.4
B 15 22 44559 78.08 2285 2291 541.4
B 5 249 35356 61.08 2285 2291 541.4
C 15 241 336899 568.67 2109 2184 588.6
C 9 85 47021 76.18 2109 2184 588.6
C 3 79 34848 55.49 2109 2184 588.6
D 2 216 207349 323.13 2105 2143 635.1
D 10 215 30722 45.0 2105 2143 635.1
D 2 14 27197 39.45 2105 2143 635.1

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