ASTROSAT CZTI

Data Quality Report

Orbit 41332

Creation date: 2024-06-27T22:27:42.462201
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/AS1A12_037T01_9000005652_41332cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41332cztM0_level2_quad_clean.evt
Size (bytes)350,199,36090,135,360
Size334.0 MB 86.0 MB
Events in quadrant A2,975,532614,240
Events in quadrant B2,597,811635,190
Events in quadrant C3,244,747565,255
Events in quadrant D3,722,361534,889

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119253
B0112542
C0128182
D0146332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5429100.184196%
B5429110.202616%
C54292624.825935%
D54291633.002395%

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 9583 5431 4 4 0.04% 0.07%
B 9583 5431 5 5 0.05% 0.09%
C 9583 5431 253 253 2.64% 4.66%
D 9583 5431 161 161 1.68% 2.96%

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 532037 4185.33 617 604 127.0
A 2 79 54322 423.06 617 604 127.0
A 3 137 6728 48.23 617 604 127.0
B 0 190 117467 978.59 609 593 119.4
B 5 255 62988 522.44 609 593 119.4
B 0 155 17302 139.91 609 593 119.4
C 0 10 722335 5328.18 577 579 135.5
C 15 214 229345 1688.81 577 579 135.5
C 9 54 42650 310.58 577 579 135.5
D 5 222 530661 3658.37 590 574 144.9
D 1 52 445352 3069.61 590 574 144.9
D 13 249 282541 1945.98 590 574 144.9

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