ASTROSAT CZTI

Data Quality Report

Orbit 22252

Creation date: 2024-06-27T18:38:34.814703
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_018T02_9000003292_22252cztM0_level2.evt modeM0/AS1A07_018T02_9000003292_22252cztM0_level2_quad_clean.evt
Size (bytes)191,214,72048,574,080
Size182.4 MB 46.3 MB
Events in quadrant A1,182,879330,283
Events in quadrant B1,216,346334,341
Events in quadrant C1,224,435318,771
Events in quadrant D1,984,725297,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053280
B053440
C054440
D076820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265710.037636%
B265830.112867%
C265880.300978%
D26582398.991723%

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 2657 2657 0 0 0.00% 0.00%
B 2658 2658 0 0 0.00% 0.00%
C 2658 2658 0 0 0.00% 0.00%
D 2658 2658 208 208 7.83% 7.83%

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 4286 62.26 306 299 64.0
A 0 226 2679 37.16 306 299 64.0
A 3 137 2618 36.21 306 299 64.0
B 0 190 19957 327.58 301 293 60.0
B 4 171 12351 200.87 301 293 60.0
B 12 111 6794 108.3 301 293 60.0
C 10 22 51073 738.73 289 290 68.7
C 14 238 46252 668.6 289 290 68.7
C 13 61 2057 25.7 289 290 68.7
D 1 52 862857 12446.7 284 275 69.3
D 13 172 29020 414.78 284 275 69.3
D 2 234 10785 151.65 284 275 69.3

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