ASTROSAT CZTI

Data Quality Report

Orbit 20171217_G08_024T01_9000001776_level2

Creation date: 2017-12-18T14:36:42.867288
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/AS1G08_024T01_9000001776cztM0_level2_bc.evt modeM0/AS1G08_024T01_9000001776cztM0_level2_quad_clean.evt
Size (bytes)1,574,426,880474,056,640
Size1.5 GB 452.1 MB
Events in quadrant A8,005,2453,103,039
Events in quadrant B11,841,9693,032,266
Events in quadrant C6,930,6083,064,304
Events in quadrant D18,644,0492,881,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06760
B06760
C06760
D06760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0756740
B0884960
C0690620
D01065420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A331407782.347616%
B3314021276.418226%
C331403861.164756%
D33140372811.249246%

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 40201 33134 6 6 0.01% 0.02%
B 40201 33131 74 74 0.18% 0.22%
C 40201 33134 0 0 0.00% 0.00%
D 40201 33134 1468 1468 3.65% 4.43%

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 1 162 343824 876.81 1781 1754 390.1
A 13 248 330491 842.63 1781 1754 390.1
A 4 2 241572 614.71 1781 1754 390.1
B 4 239 2211003 6656.05 1730 1685 331.9
B 4 206 1083203 3258.31 1730 1685 331.9
B 10 245 724384 2177.29 1730 1685 331.9
C 13 250 87778 221.29 1732 1709 388.9
C 7 247 54354 135.35 1732 1709 388.9
C 14 234 13655 30.71 1732 1709 388.9
D 1 52 8434675 20768.27 1699 1639 406.1
D 4 95 1115513 2743.17 1699 1639 406.1
D 8 195 703376 1728.19 1699 1639 406.1

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