ASTROSAT CZTI

Data Quality Report

Orbit 20201114_A09_038T44_9000003996_level2

Creation date: 2021-01-07T13:10:58.638740
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T44_9000003996cztM0_level2_bc.evt modeM0/AS1A09_038T44_9000003996cztM0_level2_quad_clean.evt
Size (bytes)245,986,560111,574,080
Size234.6 MB 106.4 MB
Events in quadrant A1,399,059751,182
Events in quadrant B1,319,085768,842
Events in quadrant C2,073,232724,750
Events in quadrant D2,236,882710,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131630
B0128170
C0155380
D0158570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60791893.109064%
B60791602.632012%
C60793225.296924%
D60792974.885672%

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 6463 6077 5 5 0.08% 0.08%
B 6463 6077 0 0 0.00% 0.00%
C 6463 6077 5 5 0.08% 0.08%
D 6463 6077 35 35 0.54% 0.58%

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 0 13 223713 3252.65 301 295 68.7
A 13 254 10533 149.05 301 295 68.7
A 8 192 4928 67.45 301 295 68.7
B 0 229 67801 1086.22 307 299 62.1
B 0 190 25876 411.58 307 299 62.1
B 0 230 22295 353.95 307 299 62.1
C 3 233 917416 12760.13 290 286 71.9
C 15 208 39869 550.72 290 286 71.9
C 13 61 1591 18.16 290 286 71.9
D 1 52 887344 12471.26 296 285 71.1
D 2 250 103022 1444.39 296 285 71.1
D 7 80 32800 457.13 296 285 71.1

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