ASTROSAT CZTI

Data Quality Report

Orbit 18782

Creation date: 2024-06-27T17:54:38.864071
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_024T01_9000002810_18782cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18782cztM0_level2_quad_clean.evt
Size (bytes)1,524,398,400261,820,800
Size1.4 GB 249.7 MB
Events in quadrant A11,463,7901,630,797
Events in quadrant B10,342,3271,674,864
Events in quadrant C10,790,3991,602,229
Events in quadrant D12,123,6261,547,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04360
B04360
C04360
D04360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484434
B0445474
C0454954
D0504754

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214243191.488984%
B214241190.555452%
C214242251.050224%
D214243731.741038%

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 24089 21429 164 164 0.68% 0.77%
B 24089 21429 6 6 0.02% 0.03%
C 24089 21429 0 0 0.00% 0.00%
D 24089 21429 299 299 1.24% 1.40%

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 6 16 1066184 2074.15 2550 2500 512.8
A 0 254 486208 943.21 2550 2500 512.8
A 4 2 41070 75.21 2550 2500 512.8
B 0 197 81037 161.47 2560 2492 486.4
B 12 111 59605 117.41 2560 2492 486.4
B 7 220 59488 117.17 2560 2492 486.4
C 3 233 712414 1222.76 2485 2500 580.6
C 14 238 384603 658.14 2485 2500 580.6
C 13 61 17232 25.37 2485 2500 580.6
D 1 52 1993493 3295.56 2497 2432 604.2
D 12 110 247825 406.17 2497 2432 604.2
D 9 1 219335 359.01 2497 2432 604.2

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