ASTROSAT CZTI

Data Quality Report

Orbit 43687

Creation date: 2024-06-27T22:54:32.641102
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/AS1A13_008T01_9000005898_43687cztM0_level2.fits modeM0/AS1A13_008T01_9000005898_43687cztM0_level2_quad_clean.evt
Size (bytes)945,092,160102,349,440
Size901.3 MB 97.6 MB
Events in quadrant A11,406,152685,842
Events in quadrant B3,723,269775,434
Events in quadrant C13,833,048510,687
Events in quadrant D5,505,499657,503

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385282
B0152892
C0457404
D0207842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6685247236.978310%
B66851462.183994%
C6684443566.352484%
D66845187.749850%

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 7670 6686 1977 1977 25.78% 29.57%
B 7670 6686 23 23 0.30% 0.34%
C 7668 6684 3686 3686 48.07% 55.15%
D 7669 6684 348 348 4.54% 5.21%

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 15 222 4654351 31632.23 715 701 147.1
A 14 63 2590406 17602.99 715 701 147.1
A 10 83 823049 5589.74 715 701 147.1
B 5 235 171302 1104.69 787 765 154.4
B 4 171 131063 844.03 787 765 154.4
B 4 206 87107 559.3 787 765 154.4
C 15 142 8243912 64569.39 537 540 127.7
C 15 157 2364385 18515.73 537 540 127.7
C 3 233 899574 7042.03 537 540 127.7
D 5 235 415081 2138.4 754 730 193.8
D 12 233 385404 1985.25 754 730 193.8
D 14 210 273129 1405.81 754 730 193.8

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