ASTROSAT CZTI

Data Quality Report

Orbit 26144

Creation date: 2024-06-27T19:25:20.292688
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_26144cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26144cztM0_level2_quad_clean.evt
Size (bytes)448,922,88090,648,000
Size428.1 MB 86.4 MB
Events in quadrant A3,273,086576,363
Events in quadrant B3,210,492592,720
Events in quadrant C3,193,848563,056
Events in quadrant D3,478,025561,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135520
B0133840
C0133770
D0143190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473821.266801%
B6474811.251158%
C64741041.606426%
D64741562.409639%

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 7373 6473 0 0 0.00% 0.00%
B 7374 6474 1 1 0.01% 0.02%
C 7374 6474 0 0 0.00% 0.00%
D 7374 6474 90 90 1.22% 1.39%

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 119746 720.42 818 803 165.1
A 13 254 9007 49.69 818 803 165.1
A 3 137 7423 40.1 818 803 165.1
B 0 230 24810 156.24 805 785 153.8
B 0 190 19930 124.51 805 785 153.8
B 12 111 18449 114.87 805 785 153.8
C 14 238 127824 696.75 781 787 182.3
C 2 16 13730 70.99 781 787 182.3
C 3 233 7184 35.08 781 787 182.3
D 1 52 384911 2038.02 797 780 188.5
D 12 233 42146 219.47 797 780 188.5
D 2 234 28618 147.7 797 780 188.5

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