ASTROSAT CZTI

Data Quality Report

Orbit 20636

Creation date: 2024-06-27T18:17:43.739992
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_007T06_9000003050_20636cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20636cztM0_level2_quad_clean.evt
Size (bytes)2,265,793,920418,449,600
Size2.1 GB 399.1 MB
Events in quadrant A14,458,6362,758,621
Events in quadrant B16,117,0052,720,295
Events in quadrant C15,228,3572,633,995
Events in quadrant D20,730,6462,437,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06260
B06260
C06260
D06260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0633397
B0678287
C0649217
D0827827

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A308992770.896469%
B308995121.657012%
C308994041.307486%
D3089923687.663678%

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 34924 30906 7 7 0.02% 0.02%
B 34924 30906 102 102 0.29% 0.33%
C 34924 30905 2 2 0.01% 0.01%
D 34924 30906 1482 1482 4.24% 4.80%

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 5 16 107564 140.15 3719 3638 741.5
A 0 226 32212 38.53 3719 3638 741.5
A 3 137 30178 35.79 3719 3638 741.5
B 7 220 827491 1200.55 3677 3592 686.3
B 4 216 263954 379.39 3677 3592 686.3
B 0 197 185008 264.35 3677 3592 686.3
C 8 208 738435 888.28 3559 3582 827.3
C 14 238 553625 664.88 3559 3582 827.3
C 3 233 35124 38.13 3559 3582 827.3
D 1 20 3768140 4536.11 3446 3347 830.0
D 1 52 2122520 2553.34 3446 3347 830.0
D 5 222 603390 722.98 3446 3347 830.0

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