ASTROSAT CZTI

Data Quality Report

Orbit 20191109_A07_018T02_9000003292_level2

Creation date: 2019-11-11T16:43:40.425375
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/AS1A07_018T02_9000003292cztM0_level2_bc.evt modeM0/AS1A07_018T02_9000003292cztM0_level2_quad_clean.evt
Size (bytes)934,332,480382,596,480
Size891.0 MB 364.9 MB
Events in quadrant A5,583,9662,527,891
Events in quadrant B5,836,0472,565,559
Events in quadrant C5,703,7662,434,262
Events in quadrant D9,415,2902,293,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0539120
B0548420
C0552070
D0697060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05240
B05240
C05240
D05240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257054471.738961%
B257055822.264151%
C257055892.291383%
D2570514995.831550%

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 30676 25705 0 0 0.00% 0.00%
B 30676 25705 8 8 0.03% 0.03%
C 30676 25706 6 6 0.02% 0.02%
D 30676 25703 182 182 0.59% 0.71%

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 13 254 36618 112.91 1449 1424 311.7
A 0 226 9508 25.93 1449 1424 311.7
A 12 194 8974 24.22 1449 1424 311.7
B 0 190 66573 238.58 1462 1430 273.0
B 3 64 63630 227.8 1462 1430 273.0
B 4 173 40183 141.93 1462 1430 273.0
C 10 22 377246 1157.9 1384 1380 324.6
C 0 10 13996 38.87 1384 1380 324.6
C 13 61 8028 20.48 1384 1380 324.6
D 1 52 3719800 11762.51 1381 1337 316.1
D 13 172 127922 400.42 1381 1337 316.1
D 2 136 107966 337.3 1381 1337 316.1

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