ASTROSAT CZTI

Data Quality Report

Orbit 20171012_A04_113T02_9000001606_level2

Creation date: 2017-10-18T20:27:45.118778
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/AS1A04_113T02_9000001606cztM0_level2.evt modeM0/AS1A04_113T02_9000001606cztM0_level2_quad_clean.evt
Size (bytes)5,217,845,760599,952,960
Size4.9 GB 572.2 MB
Events in quadrant A66,778,0073,318,148
Events in quadrant B32,569,1353,828,804
Events in quadrant C23,215,2103,910,509
Events in quadrant D32,120,7563,696,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02328710
B01289120
C01027970
D01273380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010140
B010140
C010140
D010140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497351409728.344224%
B4973728675.764320%
C497385171.039447%
D4973815613.138445%

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 58114 49750 10854 10854 18.68% 21.82%
B 58115 49756 1367 1367 2.35% 2.75%
C 58115 49758 0 0 0.00% 0.00%
D 58115 49757 913 913 1.57% 1.83%

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 14 238 24572020 22703.11 5384 5269 1082.1
A 8 5 15262602 14099.9 5384 5269 1082.1
A 15 174 6088241 5621.51 5384 5269 1082.1
B 4 239 8303229 7431.49 5985 5845 1116.5
B 4 81 262318 229.71 5985 5845 1116.5
B 0 214 169066 146.19 5985 5845 1116.5
C 13 61 43456 27.77 5933 5972 1349.8
C 9 54 32337 19.53 5933 5972 1349.8
C 8 128 23846 13.24 5933 5972 1349.8
D 8 195 2321887 1666.33 5854 5701 1390.0
D 11 129 1828475 1311.35 5854 5701 1390.0
D 14 34 1744252 1250.76 5854 5701 1390.0

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