ASTROSAT CZTI

Data Quality Report

Orbit 46400

Creation date: 2024-06-27T23:22:42.799804
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_070T04_9000006204_46400cztM0_level2.fits modeM0/AS1A13_070T04_9000006204_46400cztM0_level2_quad_clean.evt
Size (bytes)489,985,920109,584,000
Size467.3 MB 104.5 MB
Events in quadrant A6,502,920729,295
Events in quadrant B3,581,177777,516
Events in quadrant C4,238,762689,901
Events in quadrant D3,310,891668,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235435
B0149792
C0171095
D0145162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64972724.186548%
B6498801.231148%
C64964707.235222%
D6498991.523546%

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 7638 6499 77 77 1.01% 1.18%
B 7638 6499 10 10 0.13% 0.15%
C 7638 6498 350 350 4.58% 5.39%
D 7638 6499 45 45 0.59% 0.69%

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 3234441 20920.65 745 731 154.6
A 0 247 350164 2260.67 745 731 154.6
A 0 226 26259 165.15 745 731 154.6
B 2 2 451088 3041.2 752 730 148.1
B 0 190 46265 307.49 752 730 148.1
B 5 255 19441 126.35 752 730 148.1
C 12 2 828247 5023.54 701 707 164.7
C 14 254 635001 3850.45 701 707 164.7
C 3 233 14545 84.0 701 707 164.7
D 12 233 199708 1087.16 730 705 183.0
D 13 249 129578 704.04 730 705 183.0
D 2 249 50272 270.79 730 705 183.0

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