ASTROSAT CZTI

Data Quality Report

Orbit 20180206_A04_110T04_9000001886_level2

Creation date: 2018-07-20T01:31:15.897330
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_110T04_9000001886cztM0_level2_bc.evt modeM0/AS1A04_110T04_9000001886cztM0_level2_quad_clean.evt
Size (bytes)4,964,892,4802,376,812,160
Size4.6 GB 2.2 GB
Events in quadrant A28,965,70916,112,069
Events in quadrant B39,465,86915,980,985
Events in quadrant C25,876,43116,013,269
Events in quadrant D47,238,40515,019,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01930
B01930
C01930
D01930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026440
B026440
C026440
D026440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740090
B03204550
C02663740
D03399030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12944612750.984967%
B12944669195.345086%
C1294468170.631151%
D12944659484.594966%

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 149168 129423 49 49 0.03% 0.04%
B 149168 129420 518 518 0.35% 0.40%
C 149168 129424 27 27 0.02% 0.02%
D 149168 129421 1008 1008 0.68% 0.78%

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 12 189 1720712 1217.88 6481 6355 1407.7
A 8 15 1195365 844.67 6481 6355 1407.7
A 15 222 632456 444.78 6481 6355 1407.7
B 4 239 11163411 9272.78 6392 6228 1203.2
B 0 219 1192423 985.85 6392 6228 1203.2
B 3 64 762743 628.74 6392 6228 1203.2
C 15 208 985770 701.09 6335 6254 1397.1
C 14 234 61452 39.51 6335 6254 1397.1
C 13 61 37977 22.71 6335 6254 1397.1
D 1 52 14560253 9950.68 6264 6044 1462.6
D 8 195 5063313 3457.64 6264 6044 1462.6
D 7 80 735059 498.43 6264 6044 1462.6

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