ASTROSAT CZTI

Data Quality Report

Orbit 20142

Creation date: 2024-06-27T18:11:46.942915
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/AS1A05_180T01_9000002992_20142cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20142cztM0_level2_quad_clean.evt
Size (bytes)1,441,938,240263,649,600
Size1.3 GB 251.4 MB
Events in quadrant A11,599,4181,679,845
Events in quadrant B9,409,3881,742,602
Events in quadrant C9,246,3481,675,249
Events in quadrant D12,178,9111,626,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462893
B0397633
C0387653
D0485113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1829912016.563200%
B182992361.289688%
C183002561.398907%
D183008354.562842%

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 20019 18302 731 731 3.65% 3.99%
B 20019 18302 61 61 0.30% 0.33%
C 20020 18303 0 0 0.00% 0.00%
D 20020 18303 685 685 3.42% 3.74%

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 14 238 3116357 7112.14 2183 2144 437.9
A 14 254 79099 175.75 2183 2144 437.9
A 0 226 18454 37.25 2183 2144 437.9
B 10 245 430837 1012.42 2227 2172 423.4
B 3 64 76179 174.79 2227 2172 423.4
B 0 183 54217 122.92 2227 2172 423.4
C 3 233 477323 948.48 2148 2165 501.0
C 14 238 337351 669.07 2148 2165 501.0
C 8 208 33857 63.26 2148 2165 501.0
D 1 52 3734314 7144.0 2153 2097 522.4
D 2 234 78016 145.32 2153 2097 522.4
D 12 17 57986 106.98 2153 2097 522.4

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