ASTROSAT CZTI

Data Quality Report

Orbit 20180613_A04_075T04_9000002160_level2

Creation date: 2018-06-15T10:12:02.386378
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/AS1A04_075T04_9000002160cztM0_level2_bc.evt modeM0/AS1A04_075T04_9000002160cztM0_level2_quad_clean.evt
Size (bytes)336,214,080100,869,120
Size320.6 MB 96.2 MB
Events in quadrant A2,106,433620,928
Events in quadrant B2,101,811614,230
Events in quadrant C3,046,121593,455
Events in quadrant D2,305,069599,123

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194190
B0195840
C0236190
D0199760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90351511.671278%
B90351942.147205%
C90351241.372441%
D90351691.870504%

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 10876 9035 0 0 0.00% 0.00%
B 10876 9034 5 5 0.05% 0.06%
C 10876 9036 0 0 0.00% 0.00%
D 10876 9035 9 9 0.08% 0.10%

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 86726 813.15 481 472 106.1
A 1 162 71124 666.06 481 472 106.1
A 12 189 29131 270.18 481 472 106.1
B 10 16 69633 741.76 479 466 93.2
B 0 230 45478 482.71 479 466 93.2
B 0 205 37768 400.03 479 466 93.2
C 3 233 1229012 12278.83 459 453 100.1
C 8 128 6955 64.98 459 453 100.1
C 3 234 5003 45.47 459 453 100.1
D 12 110 242447 2156.49 471 456 112.2
D 10 199 92498 820.23 471 456 112.2
D 10 70 34388 302.38 471 456 112.2

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