ASTROSAT CZTI

Data Quality Report

Orbit 20171221_C03_015T01_9000001788_level2

Creation date: 2017-12-23T10:50:28.461405
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/AS1C03_015T01_9000001788cztM0_level2_bc.evt modeM0/AS1C03_015T01_9000001788cztM0_level2_quad_clean.evt
Size (bytes)238,187,520133,182,720
Size227.2 MB 127.0 MB
Events in quadrant A1,553,102903,429
Events in quadrant B1,922,388901,450
Events in quadrant C1,421,755907,748
Events in quadrant D1,864,872867,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140990
B0156370
C0134210
D0146650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65211061.625518%
B65212373.634412%
C6521530.812759%
D6521951.456832%

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 7782 6521 3 3 0.04% 0.05%
B 7782 6521 1 1 0.01% 0.02%
C 7782 6521 0 0 0.00% 0.00%
D 7782 6521 19 19 0.24% 0.29%

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 13 251 84987 1055.4 361 355 80.2
A 1 162 21917 268.89 361 355 80.2
A 14 63 19634 240.42 361 355 80.2
B 4 239 356465 5098.13 360 352 69.9
B 15 204 102631 1464.23 360 352 69.9
B 0 219 21881 308.21 360 352 69.9
C 0 207 16950 203.99 359 355 81.4
C 13 61 2169 22.3 359 355 81.4
C 14 234 1877 18.71 359 355 81.4
D 1 52 299793 3666.83 357 346 81.7
D 8 195 81314 991.48 357 346 81.7
D 7 71 30892 374.05 357 346 81.7

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