ASTROSAT CZTI

Data Quality Report

Orbit 41663

Creation date: 2024-06-27T22:31:16.974700
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/AS1T05_116T01_9000005682_41663cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41663cztM0_level2_quad_clean.evt
Size (bytes)344,943,36089,245,440
Size329.0 MB 85.1 MB
Events in quadrant A2,771,073619,107
Events in quadrant B2,579,139630,090
Events in quadrant C3,295,592577,370
Events in quadrant D3,735,474527,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113052
B0109422
C0128432
D0144012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4972100.201126%
B4972140.281577%
C49722765.551086%
D49723937.904264%

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 7065 4973 2 2 0.03% 0.04%
B 7065 4973 9 9 0.13% 0.18%
C 7065 4973 259 259 3.67% 5.21%
D 7065 4973 373 373 5.28% 7.50%

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 526617 4504.59 575 565 116.8
A 2 79 11942 97.42 575 565 116.8
A 13 254 7293 57.61 575 565 116.8
B 0 190 115751 1073.75 567 553 107.3
B 0 186 94263 873.46 567 553 107.3
B 4 141 86175 798.07 567 553 107.3
C 0 10 499850 3914.63 549 553 127.5
C 14 17 436148 3415.19 549 553 127.5
C 15 214 200183 1565.15 549 553 127.5
D 13 249 1368936 10316.23 548 533 132.6
D 2 249 89349 669.57 548 533 132.6
D 12 79 48536 361.89 548 533 132.6

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