ASTROSAT CZTI

Data Quality Report

Orbit 24340

Creation date: 2024-06-27T19:04:56.659024
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_145T01_9000003594_24340cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24340cztM0_level2_quad_clean.evt
Size (bytes)1,656,987,840219,214,080
Size1.5 GB 209.1 MB
Events in quadrant A8,810,8831,356,445
Events in quadrant B8,989,8071,391,168
Events in quadrant C18,873,0011,291,367
Events in quadrant D12,244,0311,305,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383603
B0385733
C0698193
D0486033

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187782471.315369%
B187782911.549686%
C187788584.569177%
D187788814.691660%

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 20423 18779 1 1 0.00% 0.01%
B 20423 18779 1 1 0.00% 0.01%
C 20423 18779 16 16 0.08% 0.09%
D 20422 18778 682 682 3.34% 3.63%

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 13 254 27486 55.04 2280 2226 459.0
A 3 137 21179 41.3 2280 2226 459.0
A 0 226 19256 37.11 2280 2226 459.0
B 0 230 61071 134.68 2270 2210 437.0
B 12 111 54565 119.79 2270 2210 437.0
B 11 111 48876 106.78 2270 2210 437.0
C 7 247 9772424 19457.64 2162 2172 502.1
C 14 238 339046 670.89 2162 2172 502.1
C 2 16 268174 529.75 2162 2172 502.1
D 7 238 2156675 4000.22 2197 2129 538.6
D 8 195 1185744 2197.55 2197 2129 538.6
D 12 218 347434 641.11 2197 2129 538.6

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