ASTROSAT CZTI

Data Quality Report

Orbit 35726

Creation date: 2022-05-13T10:19:39.951607
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/AS1A09_029T05_9000005124_35726cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35726cztM0_level2_quad_clean.evt
Size (bytes)384,111,36065,301,120
Size366.3 MB 62.3 MB
Events in quadrant A2,448,102420,577
Events in quadrant B2,656,103420,514
Events in quadrant C3,373,768397,521
Events in quadrant D2,819,116392,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103293
B0109142
C0133292
D0116612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4940110.222672%
B4940671.356275%
C4940981.983806%
D4940881.781377%

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 7063 4941 0 0 0.00% 0.00%
B 7063 4941 52 52 0.74% 1.05%
C 7063 4941 105 105 1.49% 2.13%
D 7063 4940 80 80 1.13% 1.62%

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 148612 1256.43 590 580 117.8
A 13 254 8147 64.23 590 580 117.8
A 13 6 7624 59.79 590 580 117.8
B 5 172 185413 1666.87 583 569 110.9
B 15 85 49984 445.61 583 569 110.9
B 5 255 33536 297.29 583 569 110.9
C 0 207 624163 4845.19 555 558 128.7
C 15 214 208588 1616.32 555 558 128.7
C 1 23 159689 1236.39 555 558 128.7
D 13 249 240467 1763.24 559 543 136.1
D 10 199 172681 1265.07 559 543 136.1
D 2 249 94768 692.47 559 543 136.1

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