ASTROSAT CZTI

Data Quality Report

Orbit 29843

Creation date: 2024-06-27T20:08:14.129580
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/AS1T03_291T01_9000004278_29843cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29843cztM0_level2_quad_clean.evt
Size (bytes)1,534,176,000236,283,840
Size1.4 GB 225.3 MB
Events in quadrant A9,600,3121,534,016
Events in quadrant B13,614,6961,540,175
Events in quadrant C9,639,6921,467,138
Events in quadrant D12,415,3901,394,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399914
B0535534
C0393414
D0482974

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177054852.739339%
B177063101.750819%
C177063632.050152%
D177069695.472721%

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 19365 17709 248 248 1.28% 1.40%
B 19366 17710 11 11 0.06% 0.06%
C 19366 17710 30 30 0.15% 0.17%
D 19366 17710 655 655 3.38% 3.70%

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 14 238 1375474 3222.23 2128 2080 426.2
A 13 254 32328 70.97 2128 2080 426.2
A 3 137 21162 44.77 2128 2080 426.2
B 6 159 5072556 12548.74 2122 2068 404.1
B 12 111 50818 120.65 2122 2068 404.1
B 0 189 50039 118.72 2122 2068 404.1
C 3 233 974123 2017.23 2057 2068 481.9
C 14 238 331797 684.26 2057 2068 481.9
C 10 22 245205 504.56 2057 2068 481.9
D 7 80 2998959 6195.72 2032 1976 483.7
D 8 195 1246184 2572.18 2032 1976 483.7
D 2 250 279965 574.69 2032 1976 483.7

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