ASTROSAT CZTI

Data Quality Report

Orbit 34489

Creation date: 2022-02-13T11:53:10.418482
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_118T04_9000004926_34489cztM0_level2.evt modeM0/AS1A05_118T04_9000004926_34489cztM0_level2_quad_clean.evt
Size (bytes)478,624,32066,683,520
Size456.5 MB 63.6 MB
Events in quadrant A4,227,165400,158
Events in quadrant B3,124,423425,222
Events in quadrant C2,737,980420,009
Events in quadrant D4,038,434394,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160922
B0126771
C0112931
D0156531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541456610.454378%
B5414841.551533%
C5414130.240118%
D54141232.271888%

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 6967 5415 374 374 5.37% 6.91%
B 6967 5415 60 60 0.86% 1.11%
C 6967 5415 9 9 0.13% 0.17%
D 6967 5415 120 120 1.72% 2.22%

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 15 169 1820810 14903.91 607 595 122.1
A 4 48 27980 224.23 607 595 122.1
A 10 83 23796 189.97 607 595 122.1
B 5 172 286104 2337.84 626 609 122.1
B 0 229 214507 1751.55 626 609 122.1
B 0 189 121028 986.08 626 609 122.1
C 15 214 227692 1593.36 612 615 142.5
C 0 10 54141 375.58 612 615 142.5
C 15 208 50464 349.78 612 615 142.5
D 8 195 1136957 7525.39 613 597 151.0
D 7 38 161360 1064.63 613 597 151.0
D 10 118 81373 534.93 613 597 151.0

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