ASTROSAT CZTI

Data Quality Report

Orbit 15264

Creation date: 2024-06-27T17:06:02.745053
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_207T01_9000002254_15264cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15264cztM0_level2_quad_clean.evt
Size (bytes)1,388,810,880238,288,320
Size1.3 GB 227.2 MB
Events in quadrant A9,394,3271,490,811
Events in quadrant B11,370,7131,472,457
Events in quadrant C10,505,7541,502,530
Events in quadrant D9,497,2921,433,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404515
B0457884
C0423054
D0417354

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191182881.506434%
B191188974.691913%
C191182821.475050%
D191183481.820274%

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 21171 19115 7 7 0.03% 0.04%
B 21171 19115 441 441 2.08% 2.31%
C 21171 19116 38 38 0.18% 0.20%
D 21171 19115 146 146 0.69% 0.76%

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 12 189 410263 878.4 2296 2243 464.5
A 9 143 100957 212.51 2296 2243 464.5
A 0 253 37888 76.74 2296 2243 464.5
B 3 64 1871986 4302.53 2266 2206 434.6
B 10 16 131386 297.25 2266 2206 434.6
B 3 209 109829 247.65 2266 2206 434.6
C 3 233 1219514 2359.12 2233 2243 516.0
C 3 9 296376 570.04 2233 2243 516.0
C 4 254 263517 506.36 2233 2243 516.0
D 13 172 403352 739.17 2228 2164 542.8
D 1 52 248557 453.97 2228 2164 542.8
D 7 38 164809 299.67 2228 2164 542.8

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