ASTROSAT CZTI

Data Quality Report

Orbit 40202

Creation date: 2024-06-27T22:13:33.572529
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_053T01_9000005530_40202cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40202cztM0_level2_quad_clean.evt
Size (bytes)496,385,28075,144,960
Size473.4 MB 71.7 MB
Events in quadrant A2,873,063563,189
Events in quadrant B2,400,724588,506
Events in quadrant C2,805,710561,698
Events in quadrant D9,911,069215,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116363
B0105322
C0112782
D0327882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932891.804542%
B4932360.729927%
C4932571.155718%
D4932308462.530414%

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 6966 4933 69 69 0.99% 1.40%
B 6966 4933 17 17 0.24% 0.34%
C 6966 4933 35 35 0.50% 0.71%
D 6966 4933 2780 2780 39.91% 56.36%

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 433661 3902.3 541 529 111.0
A 13 248 299923 2697.39 541 529 111.0
A 2 79 23665 208.44 541 529 111.0
B 5 255 125902 1175.49 547 532 106.7
B 0 245 76790 715.01 547 532 106.7
B 4 171 21660 198.1 547 532 106.7
C 4 254 218920 1719.57 542 547 127.0
C 15 214 206226 1619.61 542 547 127.0
C 0 10 95976 751.45 542 547 127.0
D 12 227 8409252 102843.59 327 316 81.8
D 1 47 132884 1621.34 327 316 81.8
D 13 249 44596 541.55 327 316 81.8

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