ASTROSAT CZTI

Data Quality Report

Orbit 20160724_G05_213T02_9000000558_level2

Creation date: 2016-09-06T17:48:06.835852
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/AS1G05_213T02_9000000558cztM0_level2_bc.evt modeM0/AS1G05_213T02_9000000558cztM0_level2_quad_clean.evt
Size (bytes)270,066,24082,131,840
Size257.6 MB 78.3 MB
Events in quadrant A1,761,225485,121
Events in quadrant B1,668,522489,503
Events in quadrant C1,757,944489,237
Events in quadrant D2,435,554464,186

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168760
B0165520
C0168070
D0189510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8048630.782803%
B8048660.820080%
C8048780.969185%
D80481181.466203%

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 9318 8048 3 3 0.03% 0.04%
B 9317 8047 0 0 0.00% 0.00%
C 9317 8047 2 2 0.02% 0.02%
D 9317 8048 21 21 0.23% 0.26%

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 50 74238 796.42 422 413 92.7
A 0 13 32489 346.03 422 413 92.7
A 0 118 24409 258.87 422 413 92.7
B 4 200 8356 97.46 429 417 81.5
B 15 204 7563 87.72 429 417 81.5
B 0 183 6632 76.29 429 417 81.5
C 9 16 87476 946.57 415 409 92.0
C 9 247 18655 198.37 415 409 92.0
C 9 54 10170 106.12 415 409 92.0
D 13 239 633167 6735.25 412 398 93.9
D 8 112 42394 447.01 412 398 93.9
D 4 95 34929 367.55 412 398 93.9

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