ASTROSAT CZTI

Data Quality Report

Orbit 12727

Creation date: 2024-06-27T16:31:39.916578
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/AS1A04_130T04_9000001878_12727cztM0_level2.evt modeM0/AS1A04_130T04_9000001878_12727cztM0_level2_quad_clean.evt
Size (bytes)51,347,52011,548,800
Size49.0 MB 11.0 MB
Events in quadrant A390,55975,508
Events in quadrant B355,27278,457
Events in quadrant C328,57976,495
Events in quadrant D438,60371,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015371
B014291
C013431
D016771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568457.922535%
B568417.218310%
C56891.584507%
D568396.866197%

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 1130 571 11 11 0.97% 1.93%
B 1130 571 0 0 0.00% 0.00%
C 1130 571 0 0 0.00% 0.00%
D 1130 571 14 14 1.24% 2.45%

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 15 239 68449 3438.59 83 81 19.9
A 12 189 1109 51.7 83 81 19.9
A 0 226 703 31.28 83 81 19.9
B 4 239 13451 680.89 86 83 19.6
B 12 111 2071 101.26 86 83 19.6
B 11 111 1795 87.2 86 83 19.6
C 13 61 585 22.83 84 84 21.9
C -1 -1 -1 -1.0 84 84 21.9
C -1 -1 -1 -1.0 84 84 21.9
D 1 52 90892 4266.9 80 77 21.3
D 10 253 25890 1212.81 80 77 21.3
D 2 136 7134 331.57 80 77 21.3

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