ASTROSAT CZTI

Data Quality Report

Orbit 26156

Creation date: 2024-06-27T19:25:28.720881
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/AS1A09_138T04_9000003776_26156cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26156cztM0_level2_quad_clean.evt
Size (bytes)436,204,80095,653,440
Size416.0 MB 91.2 MB
Events in quadrant A3,032,750622,648
Events in quadrant B3,018,646645,617
Events in quadrant C3,261,048619,335
Events in quadrant D3,511,683611,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122850
B0122700
C0131570
D0138850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5685260.457344%
B5686430.756243%
C56861302.286317%
D5686841.477313%

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 7080 5686 1 1 0.01% 0.02%
B 7081 5687 0 0 0.00% 0.00%
C 7081 5687 26 26 0.37% 0.46%
D 7081 5686 68 68 0.96% 1.20%

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 13 60340 393.51 771 757 151.4
A 13 254 8545 51.43 771 757 151.4
A 0 226 6630 38.79 771 757 151.4
B 12 111 16390 108.81 769 751 143.7
B 11 111 14959 98.85 769 751 143.7
B 14 111 13726 90.27 769 751 143.7
C 2 16 161004 906.58 757 766 176.8
C 14 238 122735 690.06 757 766 176.8
C 3 233 16797 90.7 757 766 176.8
D 1 52 580041 3195.37 768 752 181.3
D 10 103 23250 124.1 768 752 181.3
D 2 234 22298 118.85 768 752 181.3

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