ASTROSAT CZTI

Data Quality Report

Orbit 28780

Creation date: 2024-06-27T19:56:14.101547
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/AS1C05_019T04_9000004130_28780cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28780cztM0_level2_quad_clean.evt
Size (bytes)742,060,800108,835,200
Size707.7 MB 103.8 MB
Events in quadrant A3,151,277752,355
Events in quadrant B3,188,713765,613
Events in quadrant C7,829,579643,375
Events in quadrant D7,846,147661,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138811
B0139441
C0279851
D0279571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67761301.918536%
B67771331.962520%
C6777157223.196104%
D6777106515.714918%

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 7021 6776 0 0 0.00% 0.00%
B 7022 6778 4 4 0.06% 0.06%
C 7022 6777 449 449 6.39% 6.63%
D 7021 6776 907 907 12.92% 13.39%

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 13 254 12281 70.01 813 795 164.1
A 3 137 7954 43.63 813 795 164.1
A 0 226 6948 37.5 813 795 164.1
B 12 111 18699 115.79 804 784 154.7
B 11 111 17248 106.41 804 784 154.7
B 0 156 16022 98.49 804 784 154.7
C 3 233 4648546 28144.2 715 718 165.1
C 14 238 213246 1286.93 715 718 165.1
C 14 254 143066 861.97 715 718 165.1
D 8 195 3180158 18158.08 736 715 175.1
D 1 52 1746877 9972.49 736 715 175.1
D 12 233 88253 499.94 736 715 175.1

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