ASTROSAT CZTI

Data Quality Report

Orbit 40185

Creation date: 2024-06-27T22:13:13.868276
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_032T04_9000005528_40185cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40185cztM0_level2_quad_clean.evt
Size (bytes)465,701,76087,143,040
Size444.1 MB 83.1 MB
Events in quadrant A3,064,412636,818
Events in quadrant B2,485,053661,919
Events in quadrant C6,309,664524,637
Events in quadrant D4,995,235468,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121603
B0104632
C0221292
D0181582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4947901.819284%
B4947280.566000%
C494792218.637558%
D494794419.082272%

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 7040 4948 73 73 1.04% 1.48%
B 7040 4948 15 15 0.21% 0.30%
C 7040 4948 978 978 13.89% 19.77%
D 7040 4948 842 842 11.96% 17.02%

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 456877 3951.47 575 568 115.5
A 13 248 352156 3044.62 575 568 115.5
A 2 79 21524 181.47 575 568 115.5
B 5 255 74743 676.45 581 567 109.7
B 0 229 39773 357.54 581 567 109.7
B 4 171 34053 305.38 581 567 109.7
C 9 187 3954009 31467.42 540 546 125.6
C 15 214 200068 1588.09 540 546 125.6
C 0 10 19918 154.19 540 546 125.6
D 2 249 2282306 18617.0 501 489 122.6
D 12 227 523694 4268.75 501 489 122.6
D 13 249 90689 735.93 501 489 122.6

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