ASTROSAT CZTI

Data Quality Report

Orbit 20170403_A03_106T01_9000001130_level2

Creation date: 2017-09-23T14:34:48.228940
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/AS1A03_106T01_9000001130cztM0_level2.evt modeM0/AS1A03_106T01_9000001130cztM0_level2_quad_clean.evt
Size (bytes)3,172,723,200769,006,080
Size3.0 GB 733.4 MB
Events in quadrant A22,306,4275,059,285
Events in quadrant B23,704,2305,104,848
Events in quadrant C21,404,5814,966,854
Events in quadrant D25,349,0674,789,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010720
B01038320
C01002010
D01110720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010040
B010040
C010020
D010040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491584740.964238%
B491615761.171660%
C491582330.473982%
D4915810662.168518%

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 55584 49181 0 0 0.00% 0.00%
B 55584 49181 110 110 0.20% 0.22%
C 55584 49181 0 0 0.00% 0.00%
D 55584 49181 658 658 1.18% 1.34%

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 15 79 116725 95.77 5720 5594 1160.4
A 8 15 89540 72.34 5720 5594 1160.4
A 13 14 79164 63.4 5720 5594 1160.4
B 10 16 451417 417.65 5714 5574 1067.5
B 0 214 422958 390.99 5714 5574 1067.5
B 4 81 278280 255.46 5714 5574 1067.5
C 13 61 42438 29.33 5485 5497 1259.3
C 8 128 14911 7.48 5485 5497 1259.3
C 3 202 14024 6.77 5485 5497 1259.3
D 1 52 1733589 1298.09 5489 5318 1331.4
D 12 233 1308388 978.73 5489 5318 1331.4
D 13 105 455530 338.15 5489 5318 1331.4

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