ASTROSAT CZTI

Data Quality Report

Orbit 11735

Creation date: 2024-06-27T16:17:34.929798
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/AS1G08_006T03_9000001732_11735cztM0_level2.evt modeM0/AS1G08_006T03_9000001732_11735cztM0_level2_quad_clean.evt
Size (bytes)497,468,160111,965,760
Size474.4 MB 106.8 MB
Events in quadrant A3,733,276739,307
Events in quadrant B4,154,722748,165
Events in quadrant C2,938,195745,827
Events in quadrant D3,790,150696,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154513
B0168832
C0133382
D0158792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615911.375661%
B66152373.582766%
C661560.090703%
D66152263.416478%

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 7761 6617 7 7 0.09% 0.11%
B 7761 6616 127 127 1.64% 1.92%
C 7761 6617 0 0 0.00% 0.00%
D 7761 6617 171 171 2.20% 2.58%

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 15 324442 2093.04 762 746 154.7
A 1 162 155570 1001.1 762 746 154.7
A 1 178 93716 601.15 762 746 154.7
B 4 239 713961 4926.41 769 750 144.8
B 3 64 201165 1384.34 769 750 144.8
B 15 204 139078 955.48 769 750 144.8
C 13 61 5596 27.87 752 755 173.7
C 14 234 2311 8.96 752 755 173.7
C 8 222 2133 7.93 752 755 173.7
D 1 52 335333 1906.13 729 708 175.6
D 10 253 183610 1041.87 729 708 175.6
D 8 195 117677 666.29 729 708 175.6

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