ASTROSAT CZTI

Data Quality Report

Orbit 39652

Creation date: 2024-06-27T22:07:20.427086
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_018T01_9000005488_39652cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39652cztM0_level2_quad_clean.evt
Size (bytes)506,499,84082,088,640
Size483.0 MB 78.3 MB
Events in quadrant A3,849,722577,817
Events in quadrant B2,750,813572,372
Events in quadrant C7,022,448457,081
Events in quadrant D4,732,510522,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152163
B0118092
C0244332
D0176332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5078420.827097%
B50782064.056715%
C5078124124.438755%
D50781953.840095%

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 7051 5079 30 30 0.43% 0.59%
B 7051 5079 158 158 2.24% 3.11%
C 7051 5078 1157 1157 16.41% 22.78%
D 7051 5079 233 233 3.30% 4.59%

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 15 222 1247484 11214.98 540 529 111.2
A 10 83 430488 3867.01 540 529 111.2
A 15 174 45683 406.11 540 529 111.2
B 5 172 523733 5111.53 530 516 102.4
B 5 255 41122 396.7 530 516 102.4
B 15 32 39119 377.13 530 516 102.4
C 15 208 3109198 27240.5 491 493 114.1
C 9 187 1725285 15113.75 491 493 114.1
C 15 214 196936 1721.36 491 493 114.1
D 12 227 2349340 18275.58 526 513 128.5
D 5 32 106898 827.75 526 513 128.5
D 13 249 84742 655.36 526 513 128.5

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