ASTROSAT CZTI

Data Quality Report

Orbit 26005

Creation date: 2024-06-27T19:23:45.049598
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_068T01_9000003760_26005cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26005cztM0_level2_quad_clean.evt
Size (bytes)1,469,119,680221,351,040
Size1.4 GB 211.1 MB
Events in quadrant A9,338,8121,402,273
Events in quadrant B8,881,6071,413,075
Events in quadrant C8,608,0471,344,483
Events in quadrant D16,422,4491,275,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396930
B0381670
C0374940
D0614920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184002641.434783%
B184001480.804348%
C184001730.940217%
D1840015038.168478%

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 20865 18404 118 118 0.57% 0.64%
B 20865 18404 16 16 0.08% 0.09%
C 20865 18404 0 0 0.00% 0.00%
D 20865 18404 1269 1269 6.08% 6.90%

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 0 13 780865 1749.94 2219 2172 445.0
A 13 254 27455 56.82 2219 2172 445.0
A 3 137 20689 41.61 2219 2172 445.0
B 10 245 86786 202.0 2199 2143 419.0
B 0 190 72455 167.8 2199 2143 419.0
B 5 172 70054 162.07 2199 2143 419.0
C 14 238 337662 679.89 2107 2118 493.5
C 0 207 48691 94.37 2107 2118 493.5
C 3 233 23747 43.83 2107 2118 493.5
D 1 52 7382711 14174.79 2068 2017 520.7
D 7 80 685112 1311.9 2068 2017 520.7
D 1 3 286441 546.24 2068 2017 520.7

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