ASTROSAT CZTI

Data Quality Report

Orbit 44022

Creation date: 2024-06-27T22:58:23.854194
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/AS1A13_023T01_9000005932_44022cztM0_level2.fits modeM0/AS1A13_023T01_9000005932_44022cztM0_level2_quad_clean.evt
Size (bytes)421,914,240108,711,360
Size402.4 MB 103.7 MB
Events in quadrant A4,582,750722,637
Events in quadrant B3,305,442760,893
Events in quadrant C3,235,412715,091
Events in quadrant D3,986,697637,875

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184093
B0141602
C0141822
D0163772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65301532.343032%
B6530480.735069%
C6530300.459418%
D65302113.231240%

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 7610 6531 37 37 0.49% 0.57%
B 7610 6531 7 7 0.09% 0.11%
C 7610 6531 12 12 0.16% 0.18%
D 7610 6531 120 120 1.58% 1.84%

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 1288129 8389.63 739 723 153.5
A 14 238 276566 1797.58 739 723 153.5
A 15 222 127857 828.49 739 723 153.5
B 2 2 119314 801.15 747 724 148.0
B 4 171 76596 512.56 747 724 148.0
B 0 213 61903 413.3 747 724 148.0
C 3 233 251449 1461.16 724 730 171.6
C 1 241 88816 513.36 724 730 171.6
C 14 254 64789 373.33 724 730 171.6
D 5 222 328037 1818.7 712 690 180.0
D 1 52 285092 1580.1 712 690 180.0
D 7 80 103357 570.41 712 690 180.0

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