ASTROSAT CZTI

Data Quality Report

Orbit 40617

Creation date: 2024-06-27T22:18:17.104706
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_011T59_9000005552_40617cztM0_level2.fits modeM0/AS1A12_011T59_9000005552_40617cztM0_level2_quad_clean.evt
Size (bytes)320,025,60085,250,880
Size305.2 MB 81.3 MB
Events in quadrant A2,686,320573,070
Events in quadrant B2,624,834593,424
Events in quadrant C2,441,506575,617
Events in quadrant D3,686,894473,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113163
B0112582
C0106802
D0146092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5213120.230194%
B5213220.422022%
C5213180.345291%
D521362311.950892%

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 7005 5214 4 4 0.06% 0.08%
B 7005 5214 15 15 0.21% 0.29%
C 7005 5214 17 17 0.24% 0.33%
D 7005 5213 284 284 4.05% 5.45%

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 474816 4123.94 554 542 115.0
A 2 79 53055 456.61 554 542 115.0
A 12 189 14448 120.92 554 542 115.0
B 0 229 162706 1523.64 554 538 106.4
B 3 112 107661 1006.47 554 538 106.4
B 0 190 78974 736.94 554 538 106.4
C 15 214 225786 1779.9 544 548 126.5
C 14 254 37911 295.25 544 548 126.5
C 0 10 29699 230.36 544 548 126.5
D 12 227 1130586 8966.17 508 493 126.0
D 2 153 183102 1448.82 508 493 126.0
D 12 191 150239 1188.09 508 493 126.0

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