ASTROSAT CZTI

Data Quality Report

Orbit 01140

Creation date: 2024-06-27T14:08:07.902704
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/AS1P01_997T03_9000000216_01140cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01140cztM0_level2_quad_clean.evt
Size (bytes)1,032,514,560102,251,520
Size984.7 MB 97.5 MB
Events in quadrant A7,794,209667,324
Events in quadrant B8,243,791670,159
Events in quadrant C7,927,551652,411
Events in quadrant D6,861,300641,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279273
B0292582
C0283472
D0251712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A667570.104869%
B6675220.329588%
C6675100.149813%
D667580.119850%

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 7740 6676 159 159 2.05% 2.38%
B 7740 6675 228 228 2.95% 3.42%
C 7740 6676 169 169 2.18% 2.53%
D 7740 6676 89 89 1.15% 1.33%

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 0 175 14847 26.38 2021 2034 485.7
A 15 127 13430 23.46 2021 2034 485.7
A 12 243 13354 23.3 2021 2034 485.7
B 0 220 56561 108.63 2126 2135 501.0
B 15 22 55769 107.05 2126 2135 501.0
B 5 249 25472 46.58 2126 2135 501.0
C 15 241 312762 582.33 1917 1986 533.7
C 12 206 38964 69.29 1917 1986 533.7
C 9 52 28123 48.97 1917 1986 533.7
D 13 73 19375 30.84 1822 1890 566.9
D 2 63 19337 30.78 1822 1890 566.9
D 9 53 15840 24.61 1822 1890 566.9

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