ASTROSAT CZTI

Data Quality Report

Orbit 15168

Creation date: 2024-06-27T17:04:40.048797
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/AS1A04_218T08_9000002236_15168cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15168cztM0_level2_quad_clean.evt
Size (bytes)451,831,680101,240,640
Size430.9 MB 96.6 MB
Events in quadrant A3,768,877654,869
Events in quadrant B3,305,202682,820
Events in quadrant C3,224,953671,341
Events in quadrant D2,966,340627,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153803
B0137562
C0133772
D0130732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6157510.828325%
B6157851.380542%
C6157160.259867%
D6157240.389800%

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 7508 6159 13 13 0.17% 0.21%
B 7508 6159 22 22 0.29% 0.36%
C 7508 6159 1 1 0.01% 0.02%
D 7508 6159 13 13 0.17% 0.21%

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 15 239 526953 3403.55 768 754 154.6
A 0 253 235000 1515.14 768 754 154.6
A 12 189 39120 248.16 768 754 154.6
B 3 64 137962 943.88 783 765 145.4
B 0 230 41982 283.56 783 765 145.4
B 0 197 24163 160.97 783 765 145.4
C 3 233 230140 1323.57 758 764 173.3
C 9 236 34968 197.37 758 764 173.3
C 13 61 5409 26.8 758 764 173.3
D 5 222 55008 303.28 741 718 179.0
D 10 70 33823 184.93 741 718 179.0
D 2 234 23309 126.2 741 718 179.0

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