ASTROSAT CZTI

Data Quality Report

Orbit 39389

Creation date: 2024-06-27T22:03:59.686934
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_9000005470_39389cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39389cztM0_level2_quad_clean.evt
Size (bytes)324,751,68089,176,320
Size309.7 MB 85.0 MB
Events in quadrant A2,677,089610,951
Events in quadrant B2,345,357634,266
Events in quadrant C2,685,320582,275
Events in quadrant D3,928,303525,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109813
B0103202
C0110222
D0151012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4947110.222357%
B4947170.343643%
C4947671.354356%
D49471873.780069%

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 7069 4948 5 5 0.07% 0.10%
B 7069 4948 8 8 0.11% 0.16%
C 7069 4948 39 39 0.55% 0.79%
D 7069 4947 175 175 2.48% 3.54%

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 404905 3557.39 563 552 113.7
A 2 79 84590 739.34 563 552 113.7
A 13 254 7468 60.84 563 552 113.7
B 5 172 81782 756.88 564 551 107.3
B 6 203 34793 319.06 564 551 107.3
B 12 111 12960 115.62 564 551 107.3
C 14 254 298356 2400.49 538 543 124.1
C 15 214 223974 1800.94 538 543 124.1
C 0 10 25207 198.8 538 543 124.1
D 12 235 1293407 10025.42 528 513 129.0
D 7 38 350229 2711.79 528 513 129.0
D 13 249 125975 972.86 528 513 129.0

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