ASTROSAT CZTI

Data Quality Report

Orbit 04817

Creation date: 2024-06-27T14:47:24.858448
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/AS1G05_142T01_9000000610_04817cztM0_level2.evt modeM0/AS1G05_142T01_9000000610_04817cztM0_level2_quad_clean.evt
Size (bytes)505,584,00082,255,680
Size482.2 MB 78.4 MB
Events in quadrant A4,190,602502,131
Events in quadrant B3,525,702524,618
Events in quadrant C2,921,203531,464
Events in quadrant D4,255,647502,111

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164592
B0144681
C0128541
D0167891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61674958.026593%
B61671372.221502%
C6167560.908059%
D61673074.978109%

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 7307 6167 318 318 4.35% 5.16%
B 7307 6167 82 82 1.12% 1.33%
C 7307 6168 14 14 0.19% 0.23%
D 7307 6168 243 243 3.33% 3.94%

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 13 251 1094890 7313.52 726 713 149.6
A 15 249 101358 672.72 726 713 149.6
A 0 50 100236 665.22 726 713 149.6
B 10 16 482143 3333.61 747 728 144.4
B 4 80 106043 729.26 747 728 144.4
B 15 54 25029 168.27 747 728 144.4
C 9 247 86565 512.35 723 727 167.5
C 13 61 5945 31.15 723 727 167.5
C 12 4 5634 29.29 723 727 167.5
D 13 235 872401 5055.66 714 695 172.4
D 2 136 244151 1411.98 714 695 172.4
D 12 79 161217 930.98 714 695 172.4

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