ASTROSAT CZTI

Data Quality Report

Orbit 20170131_G06_154T03_9000000996_level2

Creation date: 2017-09-23T00:34:03.942095
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/AS1G06_154T03_9000000996cztM0_level2.evt modeM0/AS1G06_154T03_9000000996cztM0_level2_quad_clean.evt
Size (bytes)3,882,792,960729,852,480
Size3.6 GB 696.0 MB
Events in quadrant A27,723,5474,545,647
Events in quadrant B28,363,2224,654,248
Events in quadrant C26,880,9354,581,978
Events in quadrant D30,710,3844,349,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011800
B011800
C011800
D011800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01217490
B01231610
C01199490
D01328500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579506961.201035%
B579508141.404659%
C579504270.736842%
D5795012822.212252%

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 68402 57955 39 39 0.06% 0.07%
B 68402 57957 100 100 0.15% 0.17%
C 68402 57961 14 14 0.02% 0.02%
D 68402 57958 712 712 1.04% 1.23%

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 8 15 709257 503.13 6907 6766 1396.3
A 15 239 304890 213.52 6907 6766 1396.3
A 14 111 90734 60.14 6907 6766 1396.3
B 0 214 438443 327.16 6973 6805 1319.3
B 4 81 260041 191.94 6973 6805 1319.3
B 4 239 173104 126.05 6973 6805 1319.3
C 7 247 255309 160.24 6740 6776 1551.0
C 14 67 139825 85.78 6740 6776 1551.0
C 1 16 126669 77.3 6740 6776 1551.0
D 2 216 1910143 1169.97 6680 6482 1627.1
D 2 14 1130592 690.87 6680 6482 1627.1
D 2 33 757482 461.56 6680 6482 1627.1

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