ASTROSAT CZTI

Data Quality Report

Orbit 23430

Creation date: 2024-06-27T18:54:11.628515
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/AS1A07_138T01_9000003466_23430cztM0_level2.evt modeM0/AS1A07_138T01_9000003466_23430cztM0_level2_quad_clean.evt
Size (bytes)1,132,608,960204,661,440
Size1.1 GB 195.2 MB
Events in quadrant A7,768,0151,289,346
Events in quadrant B8,469,2171,307,769
Events in quadrant C8,198,2231,248,038
Events in quadrant D8,759,9461,225,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336604
B0356643
C0346493
D0371623

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16358930.568529%
B163582241.369361%
C163582601.589436%
D163582901.772833%

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 19148 16358 0 0 0.00% 0.00%
B 19148 16358 44 44 0.23% 0.27%
C 19148 16359 32 32 0.17% 0.20%
D 19148 16360 197 197 1.03% 1.20%

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 15 174 60355 145.71 2000 1957 400.8
A 13 254 25113 57.78 2000 1957 400.8
A 3 137 17444 38.64 2000 1957 400.8
B 0 190 308060 817.11 1981 1934 374.6
B 0 189 249501 660.8 1981 1934 374.6
B 5 172 72638 188.72 1981 1934 374.6
C 10 9 433946 974.58 1899 1907 443.3
C 14 238 302499 678.06 1899 1907 443.3
C 7 247 32878 69.86 1899 1907 443.3
D 1 52 1170633 2494.57 1929 1877 468.5
D 12 233 97357 203.79 1929 1877 468.5
D 13 104 70202 145.83 1929 1877 468.5

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