ASTROSAT CZTI

Data Quality Report

Orbit 20151015_P01_122T02_9000000028_level2

Creation date: 2016-09-06T18:00:39.705714
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/AS1P01_122T02_9000000028cztM0_level2_bc.evt modeM0/AS1P01_122T02_9000000028cztM0_level2_quad_clean.evt
Size (bytes)439,119,360133,712,640
Size418.8 MB 127.5 MB
Events in quadrant A2,024,084834,390
Events in quadrant B3,308,231836,840
Events in quadrant C2,757,893820,999
Events in quadrant D4,449,247792,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02280
C02280
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465210
B0506730
C0463960
D0503690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1104470.063383%
B110552091.890547%
C110471491.348782%
D110451381.249434%

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 36260 11061 0 0 0.00% 0.00%
B 36260 11067 57 57 0.16% 0.52%
C 36260 11061 160 160 0.44% 1.45%
D 36260 11056 21 21 0.06% 0.19%

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 15 250 22851 217.57 490 480 102.8
A 11 242 13572 127.33 490 480 102.8
A 12 149 13507 126.69 490 480 102.8
B 8 9 338045 3739.48 500 485 90.3
B 5 156 229979 2542.33 500 485 90.3
B 10 14 227688 2516.95 500 485 90.3
C 9 54 487303 4743.3 484 476 102.6
C 9 68 123411 1197.79 484 476 102.6
C 3 159 113800 1104.15 484 476 102.6
D 10 154 1411786 13099.8 478 464 107.7
D 1 4 575161 5334.3 478 464 107.7
D 1 5 112497 1039.88 478 464 107.7

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