ASTROSAT CZTI

Data Quality Report

Orbit 18616

Creation date: 2024-06-27T17:52:29.609549
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_212T06_9000002776_18616cztM0_level2.evt modeM0/AS1A05_212T06_9000002776_18616cztM0_level2_quad_clean.evt
Size (bytes)284,783,04056,453,760
Size271.6 MB 53.8 MB
Events in quadrant A2,061,519357,444
Events in quadrant B2,055,325371,657
Events in quadrant C1,995,942356,403
Events in quadrant D2,240,922343,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086781
B086131
C083511
D093261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3965380.958386%
B3965551.387137%
C3965511.286255%
D3965270.680958%

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 5075 3966 2 2 0.04% 0.05%
B 5075 3966 3 3 0.06% 0.08%
C 5075 3966 0 0 0.00% 0.00%
D 5075 3966 9 9 0.18% 0.23%

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 0 13 133604 1314.14 499 488 101.3
A 13 254 6630 60.63 499 488 101.3
A 0 226 4311 37.74 499 488 101.3
B 0 230 60618 624.76 504 491 96.2
B 12 111 11360 112.94 504 491 96.2
B 11 111 10224 101.13 504 491 96.2
C 14 238 75807 657.03 488 492 114.6
C 3 233 12956 108.73 488 492 114.6
C 9 54 4288 33.12 488 492 114.6
D 1 52 250789 2075.51 490 475 120.6
D 5 222 62227 512.02 490 475 120.6
D 7 96 33049 270.09 490 475 120.6

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