ASTROSAT CZTI

Data Quality Report

Orbit 20151124_P01_165T02_9000000120_level2

Creation date: 2017-10-26T22:09:26.215193
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/AS1P01_165T02_9000000120cztM0_level2.evt modeM0/AS1P01_165T02_9000000120cztM0_level2_quad_clean.evt
Size (bytes)6,185,255,040487,209,600
Size5.8 GB 464.6 MB
Events in quadrant A46,313,3953,053,962
Events in quadrant B49,891,3723,066,744
Events in quadrant C45,264,0993,019,063
Events in quadrant D43,310,8862,967,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01649120
B01756400
C01618020
D01564690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38585980.253985%
B385853340.865621%
C385851200.311002%
D385853680.953738%

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 43580 38589 1654 1654 3.80% 4.29%
B 43580 38587 2564 2564 5.88% 6.64%
C 43580 38590 1511 1511 3.47% 3.92%
D 43580 38590 1727 1727 3.96% 4.48%

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 0 214 218466 71.55 11990 12122 2883.7
A 14 79 92034 27.71 11990 12122 2883.7
A 11 79 45611 11.61 11990 12122 2883.7
B 0 220 511560 169.21 12573 12655 2948.4
B 5 191 379591 124.45 12573 12655 2948.4
B 0 184 281660 91.24 12573 12655 2948.4
C 9 83 196138 57.84 11419 11835 3186.7
C 3 111 160544 46.67 11419 11835 3186.7
C 15 241 121806 34.51 11419 11835 3186.7
D 13 73 991448 293.18 11021 11398 3342.9
D 1 4 356045 103.1 11021 11398 3342.9
D 2 16 227492 64.64 11021 11398 3342.9

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