ASTROSAT CZTI

Data Quality Report

Orbit 04227

Creation date: 2024-06-27T14:39:03.056556
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/AS1G05_240T01_9000000536_04227cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04227cztM0_level2_quad_clean.evt
Size (bytes)493,632,00058,403,520
Size470.8 MB 55.7 MB
Events in quadrant A3,833,686335,457
Events in quadrant B3,568,013340,999
Events in quadrant C3,137,194327,706
Events in quadrant D3,979,319320,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154083
B0145502
C0132352
D0164382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63612864.496148%
B63611662.609653%
C6361911.430593%
D63611121.760729%

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 7636 6362 97 97 1.27% 1.52%
B 7636 6362 15 15 0.20% 0.24%
C 7636 6362 0 0 0.00% 0.00%
D 7636 6362 4 4 0.05% 0.06%

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 0 50 655038 3999.42 805 786 163.6
A 15 234 37043 221.64 805 786 163.6
A 8 15 37040 221.62 805 786 163.6
B 3 0 161629 1029.39 816 802 156.2
B 14 167 142836 909.1 816 802 156.2
B 4 48 29980 186.76 816 802 156.2
C 9 144 106415 588.92 775 778 179.4
C 13 61 6361 31.13 775 778 179.4
C 14 67 3687 16.22 775 778 179.4
D 11 132 883488 4701.6 780 759 187.8
D 7 39 41810 218.65 780 759 187.8
D 13 239 37681 196.65 780 759 187.8

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