ASTROSAT CZTI

Data Quality Report

Orbit 20180716_C03_015T03_9000002230_level2

Creation date: 2018-07-17T10:41:03.179557
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_015T03_9000002230cztM0_level2_bc.evt modeM0/AS1C03_015T03_9000002230cztM0_level2_quad_clean.evt
Size (bytes)218,010,240120,761,280
Size207.9 MB 115.2 MB
Events in quadrant A1,402,681803,342
Events in quadrant B1,516,176814,478
Events in quadrant C1,768,508799,122
Events in quadrant D1,450,755773,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138520
B0141580
C0149820
D0141210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6699751.119570%
B6699801.194208%
C6699721.074787%
D66991111.656964%

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 7179 6699 0 0 0.00% 0.00%
B 7180 6699 2 2 0.03% 0.03%
C 7180 6700 1 1 0.01% 0.01%
D 7180 6700 3 3 0.04% 0.04%

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 113373 1535.47 324 317 73.6
A 9 143 20072 268.3 324 317 73.6
A 15 239 10091 132.75 324 317 73.6
B 3 64 134571 2046.15 327 317 65.6
B 0 230 19219 288.08 327 317 65.6
B 0 229 19000 284.75 327 317 65.6
C 3 233 516361 6989.85 316 310 73.8
C 0 207 11164 147.02 316 310 73.8
C 7 247 2081 23.99 316 310 73.8
D 10 70 55306 713.23 319 306 77.1
D 7 38 46247 595.75 319 306 77.1
D 2 234 26923 345.16 319 306 77.1

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