ASTROSAT CZTI

Data Quality Report

Orbit 19535

Creation date: 2024-06-27T18:03:48.114789
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/AS1A05_101T05_9000002902_19535cztM0_level2.evt modeM0/AS1A05_101T05_9000002902_19535cztM0_level2_quad_clean.evt
Size (bytes)447,678,720114,886,080
Size426.9 MB 109.6 MB
Events in quadrant A3,124,987764,521
Events in quadrant B3,277,122770,574
Events in quadrant C3,414,599737,280
Events in quadrant D3,280,487734,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137852
B0141132
C0142823
D0144772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6777230.339383%
B6777550.811569%
C6776580.855962%
D6776310.457497%

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 7737 6778 1 1 0.01% 0.01%
B 7737 6778 22 22 0.28% 0.32%
C 7736 6777 0 0 0.00% 0.00%
D 7736 6777 16 16 0.21% 0.24%

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 4 2 30738 184.65 801 783 162.2
A 13 254 8570 48.0 801 783 162.2
A 0 226 6744 36.74 801 783 162.2
B 3 64 86719 565.13 800 780 152.1
B 12 111 18449 116.19 800 780 152.1
B 0 190 17730 111.46 800 780 152.1
C 3 233 272911 1513.83 772 778 179.8
C 14 238 120845 667.91 772 778 179.8
C 7 247 7692 38.46 772 778 179.8
D 12 218 139045 724.55 783 762 190.9
D 1 52 109649 570.52 783 762 190.9
D 10 34 33672 172.43 783 762 190.9

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