ASTROSAT CZTI

Data Quality Report

Orbit 42749

Creation date: 2024-06-27T22:43:47.470398
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/AS1A05_013T01_9000005822_42749cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42749cztM0_level2_quad_clean.evt
Size (bytes)412,764,48090,812,160
Size393.6 MB 86.6 MB
Events in quadrant A3,014,084639,428
Events in quadrant B2,655,266640,118
Events in quadrant C6,430,143552,306
Events in quadrant D2,788,637565,458

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119842
B0110102
C0225682
D0117012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5032200.397456%
B5032881.748808%
C503282516.395072%
D5032821.629571%

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 7095 5033 14 14 0.20% 0.28%
B 7095 5033 65 65 0.92% 1.29%
C 7095 5033 801 801 11.29% 15.91%
D 7095 5033 77 77 1.09% 1.53%

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 519643 4286.94 598 588 121.1
A 13 248 96311 790.59 598 588 121.1
A 12 189 56574 462.4 598 588 121.1
B 5 172 187456 1660.14 590 576 112.6
B 0 156 82318 726.15 590 576 112.6
B 0 229 34259 299.22 590 576 112.6
C 0 239 4038956 31654.6 553 558 127.6
C 15 214 200742 1569.12 553 558 127.6
C 14 254 17510 132.88 553 558 127.6
D 12 6 279531 1980.79 577 561 140.8
D 12 233 112636 795.77 577 561 140.8
D 7 96 56215 395.16 577 561 140.8

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