ASTROSAT CZTI

Data Quality Report

Orbit 37868

Creation date: 2024-06-27T21:45:28.921095
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/AS1C07_001T12_9000005352_37868cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37868cztM0_level2_quad_clean.evt
Size (bytes)422,478,72096,520,320
Size402.9 MB 92.0 MB
Events in quadrant A2,737,129675,734
Events in quadrant B2,852,162668,587
Events in quadrant C2,652,066632,090
Events in quadrant D4,217,447599,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109843
B0113622
C0106612
D0159022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4952150.302908%
B4952811.635703%
C4952440.888530%
D49523076.199515%

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 7044 4953 8 8 0.11% 0.16%
B 7044 4953 61 61 0.87% 1.23%
C 7044 4953 41 41 0.58% 0.83%
D 7044 4953 236 236 3.35% 4.76%

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 337742 2784.59 610 601 121.1
A 7 3 17911 142.97 610 601 121.1
A 12 189 12645 99.47 610 601 121.1
B 5 172 274780 2504.34 591 580 109.5
B 0 229 123813 1125.52 591 580 109.5
B 0 213 31123 278.96 591 580 109.5
C 15 214 210614 1613.01 570 574 130.2
C 0 10 186110 1424.83 570 574 130.2
C 14 254 27966 210.36 570 574 130.2
D 1 52 957809 6905.74 574 559 138.6
D 12 235 262034 1886.32 574 559 138.6
D 2 249 182859 1315.14 574 559 138.6

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