ASTROSAT CZTI

Data Quality Report

Orbit 20172

Creation date: 2024-06-27T18:12:00.243386
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_20172cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20172cztM0_level2_quad_clean.evt
Size (bytes)276,292,80068,840,640
Size263.5 MB 65.7 MB
Events in quadrant A1,990,609463,087
Events in quadrant B2,018,320457,506
Events in quadrant C2,087,194436,078
Events in quadrant D1,988,164435,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085180
B084940
C084820
D086930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4147220.530504%
B4148110.265188%
C4148200.482160%
D4148100.241080%

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 4147 4147 11 11 0.27% 0.27%
B 4148 4148 2 2 0.05% 0.05%
C 4148 4148 0 0 0.00% 0.00%
D 4148 4148 11 11 0.27% 0.27%

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 65310 639.73 497 490 101.3
A 10 253 5206 46.54 497 490 101.3
A 0 226 4259 37.2 497 490 101.3
B 0 198 44326 462.87 494 481 94.7
B 0 183 19525 201.05 494 481 94.7
B 0 197 13190 134.17 494 481 94.7
C 3 233 156503 1389.12 476 482 112.3
C 14 238 74852 662.15 476 482 112.3
C 13 61 3273 24.85 476 482 112.3
D 1 52 109965 921.78 484 471 118.8
D 2 234 20290 166.85 484 471 118.8
D 7 96 19337 158.82 484 471 118.8

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