ASTROSAT CZTI

Data Quality Report

Orbit 41052

Creation date: 2024-06-27T22:23:43.551875
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_029T02_9000005590_41052cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41052cztM0_level2_quad_clean.evt
Size (bytes)317,505,60091,555,200
Size302.8 MB 87.3 MB
Events in quadrant A2,933,789619,834
Events in quadrant B2,397,327639,349
Events in quadrant C3,091,637588,074
Events in quadrant D2,916,290553,312

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118663
B0106542
C0123212
D0123392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5310170.320151%
B531050.094162%
C53101522.862524%
D5310520.979284%

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 7163 5311 3 3 0.04% 0.06%
B 7163 5311 0 0 0.00% 0.00%
C 7163 5311 133 133 1.86% 2.50%
D 7163 5311 43 43 0.60% 0.81%

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 487099 3855.76 616 604 126.2
A 12 189 55688 436.57 616 604 126.2
A 13 254 8096 59.38 616 604 126.2
B 12 111 15022 121.9 607 590 118.4
B 11 111 13942 112.78 607 590 118.4
B 14 111 13747 111.13 607 590 118.4
C 14 254 430445 3157.58 584 588 136.1
C 15 214 245370 1798.08 584 588 136.1
C 0 10 130484 954.17 584 588 136.1
D 13 249 524133 3638.92 594 576 143.9
D 13 171 46063 316.15 594 576 143.9
D 2 234 20903 141.28 594 576 143.9

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