ASTROSAT CZTI

Data Quality Report

Orbit 39314

Creation date: 2024-06-27T22:03:05.416676
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/AS1A12_102T01_9000005466_39314cztM0_level2.fits modeM0/AS1A12_102T01_9000005466_39314cztM0_level2_quad_clean.evt
Size (bytes)367,752,96071,565,120
Size350.7 MB 68.2 MB
Events in quadrant A2,302,168502,506
Events in quadrant B2,371,393506,751
Events in quadrant C2,207,900492,290
Events in quadrant D6,389,726356,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095611
B0100961
C093621
D0220471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4387140.319125%
B43871232.803738%
C4387370.843401%
D4387123228.082972%

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 4387 4387 6 6 0.14% 0.14%
B 4387 4387 108 108 2.46% 2.46%
C 4387 4387 31 31 0.71% 0.71%
D 4386 4386 1059 1059 24.15% 24.15%

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 10 83 287693 2908.47 481 470 98.8
A 13 248 92248 929.36 481 470 98.8
A 15 222 37926 379.29 481 470 98.8
B 5 172 487400 5327.72 475 463 91.4
B 12 111 11527 121.05 475 463 91.4
B 11 111 10481 109.61 475 463 91.4
C 15 214 193854 1771.03 468 471 109.2
C 14 254 143780 1312.44 468 471 109.2
C 9 187 35385 319.75 468 471 109.2
D 12 235 3854829 38385.15 412 399 100.4
D 12 227 395086 3930.57 412 399 100.4
D 13 249 379893 3779.27 412 399 100.4

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