ASTROSAT CZTI

Data Quality Report

Orbit 15925

Creation date: 2024-06-27T17:15:13.816039
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/AS1A04_143T01_9000002344_15925cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15925cztM0_level2_quad_clean.evt
Size (bytes)241,024,32051,670,080
Size229.9 MB 49.3 MB
Events in quadrant A2,992,230327,540
Events in quadrant B1,311,914362,619
Events in quadrant C1,334,174341,722
Events in quadrant D1,467,336330,485

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108451
B058681
C058381
D065751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282930610.816543%
B2829371.307883%
C2829421.484624%
D2829993.499470%

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 2830 2830 249 249 8.80% 8.80%
B 2830 2830 0 0 0.00% 0.00%
C 2830 2830 0 0 0.00% 0.00%
D 2830 2830 72 72 2.54% 2.54%

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 15 239 1796584 27995.94 311 304 64.2
A 0 226 2707 37.44 311 304 64.2
A 12 194 2293 30.99 311 304 64.2
B 4 173 12132 183.46 327 319 64.4
B 0 189 7906 117.83 327 319 64.4
B 12 111 7495 111.44 327 319 64.4
C 14 238 47972 624.8 316 317 76.3
C 3 233 46635 607.27 316 317 76.3
C 7 247 8682 109.67 316 317 76.3
D 12 17 230711 2908.77 313 303 79.2
D 10 70 37774 473.05 313 303 79.2
D 2 120 13138 162.03 313 303 79.2

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