ASTROSAT CZTI

Data Quality Report

Orbit 00794

Creation date: 2024-06-27T14:03:00.713695
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_010T01_9000000112_00794cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00794cztM0_level2_quad_clean.evt
Size (bytes)973,411,20097,588,800
Size928.3 MB 93.1 MB
Events in quadrant A7,494,438644,132
Events in quadrant B7,755,222651,583
Events in quadrant C6,923,197627,063
Events in quadrant D6,899,252603,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265950
B0274310
C0249760
D0249430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6144430.699870%
B6144180.292969%
C6144100.162760%
D61441272.067057%

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 7384 6145 274 274 3.71% 4.46%
B 7384 6145 223 223 3.02% 3.63%
C 7384 6145 122 122 1.65% 1.99%
D 7384 6145 220 220 2.98% 3.58%

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 206293 462.53 1846 1865 442.0
A 15 233 175022 391.78 1846 1865 442.0
A 15 171 18472 37.57 1846 1865 442.0
B 0 220 155372 337.03 1942 1950 455.2
B 0 23 84222 180.73 1942 1950 455.2
B 0 230 33457 69.21 1942 1950 455.2
C 9 52 95477 197.75 1720 1779 473.8
C 15 241 48031 97.61 1720 1779 473.8
C 3 111 28740 56.9 1720 1779 473.8
D 13 25 293969 584.49 1629 1683 500.1
D 1 4 269528 535.62 1629 1683 500.1
D 2 16 91399 179.41 1629 1683 500.1

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