ASTROSAT CZTI

Data Quality Report

Orbit 14056

Creation date: 2024-06-27T16:49:45.388611
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_162T01_9000002074_14056cztM0_level2.evt modeM0/AS1A04_162T01_9000002074_14056cztM0_level2_quad_clean.evt
Size (bytes)468,809,280127,056,960
Size447.1 MB 121.2 MB
Events in quadrant A3,098,067874,343
Events in quadrant B3,416,087885,054
Events in quadrant C3,030,334841,186
Events in quadrant D4,221,932804,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133093
B0143202
C0132382
D0167772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358320.503303%
B6358921.446996%
C6358160.251651%
D63581292.028940%

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 7544 6360 1 1 0.01% 0.02%
B 7544 6360 33 33 0.44% 0.52%
C 7544 6360 3 3 0.04% 0.05%
D 7544 6360 98 98 1.30% 1.54%

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 12 189 90130 573.89 770 755 155.7
A 8 15 17327 106.41 770 755 155.7
A 15 222 9253 54.57 770 755 155.7
B 0 85 161456 1117.79 772 755 143.8
B 0 189 64833 445.71 772 755 143.8
B 0 190 38431 262.06 772 755 143.8
C 3 233 119481 702.02 733 735 169.1
C 0 207 28778 165.79 733 735 169.1
C 9 15 26178 150.42 733 735 169.1
D 12 110 438028 2391.68 722 702 182.9
D 1 52 425390 2322.57 722 702 182.9
D 8 195 301765 1646.48 722 702 182.9

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