ASTROSAT CZTI

Data Quality Report

Orbit 42020

Creation date: 2024-06-27T22:35:49.203362
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A12_006T12_9000005734_42020cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42020cztM0_level2_quad_clean.evt
Size (bytes)330,986,88087,500,160
Size315.7 MB 83.4 MB
Events in quadrant A3,326,428584,104
Events in quadrant B2,784,187593,406
Events in quadrant C2,511,951568,446
Events in quadrant D3,205,162522,143

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131843
B0120462
C0110012
D0135062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54421332.443954%
B54421322.425579%
C544230.055127%
D54421392.554208%

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 7056 5443 82 82 1.16% 1.51%
B 7056 5443 111 111 1.57% 2.04%
C 7056 5443 0 0 0.00% 0.00%
D 7056 5443 107 107 1.52% 1.97%

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 10 83 559529 4606.67 588 575 121.3
A 15 223 373783 3075.83 588 575 121.3
A 12 189 107602 882.07 588 575 121.3
B 7 202 235486 2009.56 588 572 116.9
B 0 190 75400 640.11 588 572 116.9
B 5 255 69207 587.13 588 572 116.9
C 15 214 229505 1694.74 574 577 135.1
C 15 111 12223 86.21 574 577 135.1
C 12 249 10848 76.04 574 577 135.1
D 13 249 611406 4259.96 568 551 143.4
D 12 6 169983 1181.58 568 551 143.4
D 10 199 67342 465.78 568 551 143.4

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