ASTROSAT CZTI

Data Quality Report

Orbit 48158

Creation date: 2024-08-24T11:24:58.189069
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/AS1C09_009T01_9000006406_48158cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48158cztM0_level2_quad_clean.evt
Size (bytes)439,888,32089,458,560
Size419.5 MB 85.3 MB
Events in quadrant A7,834,336757,880
Events in quadrant B1,163,973120
Events in quadrant C3,274,435782,341
Events in quadrant D3,491,503709,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280212
B071272
C0141262
D0147472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65845628.535844%
B6584658399.984812%
C6584831.260632%
D65841121.701094%

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 7659 6586 119 119 1.55% 1.81%
B 7658 6568 0 0 0.00% 0.00%
C 7659 6586 12 12 0.16% 0.18%
D 7659 6586 33 33 0.43% 0.50%

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 4625753 28035.96 784 767 165.0
A 15 174 71038 425.97 784 767 165.0
A 13 248 34279 203.14 784 767 165.0
B 2 177 907587 76208.02 48 47 11.9
B 4 171 14178 1186.61 48 47 11.9
B 4 21 12014 1004.89 48 47 11.9
C 12 2 121199 638.79 792 800 188.5
C 14 254 30704 158.66 792 800 188.5
C 0 207 23846 122.27 792 800 188.5
D 12 233 82953 411.3 790 767 199.8
D 12 2 80340 398.23 790 767 199.8
D 5 32 48940 241.08 790 767 199.8

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