ASTROSAT CZTI

Data Quality Report

Orbit 00910

Creation date: 2024-06-27T14:04:35.135016
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_161T02_9000000184_00910cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00910cztM0_level2_quad_clean.evt
Size (bytes)1,083,873,60084,879,360
Size1.0 GB 80.9 MB
Events in quadrant A8,092,733541,969
Events in quadrant B8,122,203553,756
Events in quadrant C7,409,915540,313
Events in quadrant D8,792,677503,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284590
B0285410
C0263990
D0305750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61623545.744888%
B6162881.428108%
C6163570.924874%
D61625639.136644%

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 7352 6163 583 583 7.93% 9.46%
B 7352 6163 385 385 5.24% 6.25%
C 7353 6164 219 219 2.98% 3.55%
D 7352 6163 1224 1224 16.65% 19.86%

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 15 233 832460 1870.34 1860 1868 444.1
A 15 127 124789 276.79 1860 1868 444.1
A 11 79 7424 12.51 1860 1868 444.1
B 3 0 304862 658.35 1964 1973 460.1
B 5 200 97542 207.73 1964 1973 460.1
B 0 220 87205 185.26 1964 1973 460.1
C 9 83 148372 296.49 1797 1858 494.2
C 12 254 68884 135.64 1797 1858 494.2
C 15 241 53631 104.77 1797 1858 494.2
D 12 188 2051335 3894.22 1713 1772 526.3
D 1 4 166709 313.38 1713 1772 526.3
D 13 73 106858 199.67 1713 1772 526.3

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