ASTROSAT CZTI

Data Quality Report

Orbit 20200826_A09_038T10_9000003844_level2

Creation date: 2021-01-09T01:26:22.912730
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/AS1A09_038T10_9000003844cztM0_level2_bc.evt modeM0/AS1A09_038T10_9000003844cztM0_level2_quad_clean.evt
Size (bytes)576,959,040174,323,520
Size550.2 MB 166.2 MB
Events in quadrant A2,186,5061,243,673
Events in quadrant B2,762,1951,243,358
Events in quadrant C3,013,9401,213,787
Events in quadrant D8,847,420909,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200930
B0225930
C0240220
D0508220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9633510.529430%
B96333843.986297%
C96334174.328870%
D9633400741.596595%

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 10268 9633 0 0 0.00% 0.00%
B 10268 9634 53 53 0.52% 0.55%
C 10268 9633 11 11 0.11% 0.11%
D 10268 9628 423 423 4.12% 4.39%

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 13 111406 1000.6 501 491 110.8
A 6 16 79896 716.34 501 491 110.8
A 5 168 58824 526.24 501 491 110.8
B 5 172 609785 6221.63 498 486 97.9
B 0 189 132609 1349.12 498 486 97.9
B 3 112 57309 580.23 498 486 97.9
C 4 254 897873 7616.27 483 480 117.8
C 3 233 220934 1871.02 483 480 117.8
C 0 207 16573 136.58 483 480 117.8
D 7 80 5168728 55606.9 387 374 92.9
D 1 52 1730544 18615.09 387 374 92.9
D 2 250 265646 2854.09 387 374 92.9

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