ASTROSAT CZTI

Data Quality Report

Orbit 40129

Creation date: 2024-06-27T22:12:40.215395
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_004T01_9000005520_40129cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40129cztM0_level2_quad_clean.evt
Size (bytes)512,331,84082,843,200
Size488.6 MB 79.0 MB
Events in quadrant A2,671,087601,219
Events in quadrant B2,566,213621,541
Events in quadrant C7,930,038435,696
Events in quadrant D5,389,944482,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112523
B0113782
C0271652
D0197502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5246130.247808%
B5246801.524971%
C5246172632.901258%
D524674514.201296%

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 7368 5247 4 4 0.05% 0.08%
B 7368 5247 56 56 0.76% 1.07%
C 7368 5247 1795 1795 24.36% 34.21%
D 7368 5247 818 818 11.10% 15.59%

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 450092 3892.87 566 555 115.5
A 2 79 25297 214.26 566 555 115.5
A 3 137 6076 47.81 566 555 115.5
B 5 255 234702 2138.67 568 553 109.5
B 4 171 74622 676.53 568 553 109.5
B 0 245 16615 146.71 568 553 109.5
C 9 187 5753458 51561.7 479 483 111.6
C 15 214 192674 1722.53 479 483 111.6
C 0 10 60201 535.23 479 483 111.6
D 12 227 2180183 17144.71 517 502 127.1
D 2 249 529998 4164.86 517 502 127.1
D 2 250 477944 3755.41 517 502 127.1

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