ASTROSAT CZTI

Data Quality Report

Orbit 32684

Creation date: 2024-06-27T20:40:46.993677
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/AS1A10_057T03_9000004722_32684cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32684cztM0_level2_quad_clean.evt
Size (bytes)680,742,72072,832,320
Size649.2 MB 69.5 MB
Events in quadrant A7,424,173361,362
Events in quadrant B3,177,626526,117
Events in quadrant C2,900,246504,926
Events in quadrant D6,750,311434,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257193
B0128302
C0119382
D0237952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5391174032.276016%
B5391490.908922%
C5391490.908922%
D5391112020.775366%

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 7392 5392 1560 1560 21.10% 28.93%
B 7392 5391 29 29 0.39% 0.54%
C 7392 5392 40 40 0.54% 0.74%
D 7392 5391 951 951 12.87% 17.64%

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 15 249 4846481 44750.72 549 541 108.3
A 0 253 375118 3459.1 549 541 108.3
A 12 189 30932 280.65 549 541 108.3
B 3 26 195678 1551.07 674 662 125.7
B 12 1 74548 587.65 674 662 125.7
B 0 199 63234 497.67 674 662 125.7
C 9 236 103338 707.56 641 648 145.1
C 0 10 101492 694.84 641 648 145.1
C 0 207 39437 267.26 641 648 145.1
D 2 249 652343 4687.5 585 573 139.0
D 4 239 640799 4604.47 585 573 139.0
D 7 80 625458 4494.14 585 573 139.0

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