ASTROSAT CZTI

Data Quality Report

Orbit 12036

Creation date: 2024-06-27T16:21:29.901157
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_044T01_9000001782_12036cztM0_level2.evt modeM0/AS1A04_044T01_9000001782_12036cztM0_level2_quad_clean.evt
Size (bytes)1,461,720,960219,568,320
Size1.4 GB 209.4 MB
Events in quadrant A12,209,4571,288,648
Events in quadrant B9,589,7881,377,213
Events in quadrant C8,818,8401,350,938
Events in quadrant D12,341,5301,298,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489725
B0410204
C0397254
D0487944

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1936415327.911589%
B193643882.003718%
C193642101.084487%
D193647213.723404%

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 21515 19366 1113 1113 5.17% 5.75%
B 21515 19367 51 51 0.24% 0.26%
C 21515 19367 7 7 0.03% 0.04%
D 21515 19367 524 524 2.44% 2.71%

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 5 16 3248918 7306.63 2197 2147 444.4
A 1 162 166918 370.81 2197 2147 444.4
A 9 143 92466 203.26 2197 2147 444.4
B 4 239 393754 889.85 2289 2227 440.0
B 15 204 154971 347.15 2289 2227 440.0
B 0 85 93352 207.11 2289 2227 440.0
C 14 234 59559 109.94 2241 2252 521.2
C 13 61 16380 27.1 2241 2252 521.2
C 8 128 13698 21.96 2241 2252 521.2
D 1 52 2556752 4840.8 2202 2142 527.7
D 8 195 905897 1712.55 2202 2142 527.7
D 7 80 204177 382.84 2202 2142 527.7

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