ASTROSAT CZTI

Data Quality Report

Orbit 17672

Creation date: 2024-06-27T17:39:20.514549
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/AS1A05_208T01_9000002614_17672cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17672cztM0_level2_quad_clean.evt
Size (bytes)486,829,440111,421,440
Size464.3 MB 106.3 MB
Events in quadrant A3,364,572738,587
Events in quadrant B3,505,858762,563
Events in quadrant C4,023,162718,275
Events in quadrant D3,402,633695,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140782
B0146012
C0165812
D0144803

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6593280.424693%
B6593701.061732%
C6593901.365084%
D6592460.697816%

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 7903 6594 0 0 0.00% 0.00%
B 7903 6594 16 16 0.20% 0.24%
C 7903 6594 1 1 0.01% 0.02%
D 7902 6593 28 28 0.35% 0.42%

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 8 205 94053 547.6 847 832 170.2
A 0 226 7413 38.66 847 832 170.2
A 15 174 7303 38.01 847 832 170.2
B 10 245 111724 691.54 856 836 160.3
B 12 111 18660 111.16 856 836 160.3
B 0 189 16997 100.79 856 836 160.3
C 3 233 637702 3342.74 817 826 190.5
C 14 238 127640 665.6 817 826 190.5
C 5 218 38644 198.49 817 826 190.5
D 5 222 224596 1140.98 815 797 196.1
D 1 52 58373 293.54 815 797 196.1
D 2 234 25618 126.54 815 797 196.1

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