ASTROSAT CZTI

Data Quality Report

Orbit 30811

Creation date: 2024-06-27T20:19:54.025668
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/AS1C06_003T01_9000004452_30811cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30811cztM0_level2_quad_clean.evt
Size (bytes)1,895,060,160267,505,920
Size1.8 GB 255.1 MB
Events in quadrant A8,953,9151,871,349
Events in quadrant B14,293,6411,851,699
Events in quadrant C10,307,2191,782,669
Events in quadrant D22,641,9241,368,844

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385383
B0554563
C0424083
D0796203

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177832881.619524%
B177833662.058145%
C177834072.288703%
D17783547630.793454%

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 19623 17784 147 147 0.75% 0.83%
B 19623 17784 69 69 0.35% 0.39%
C 19623 17784 67 67 0.34% 0.38%
D 19623 17784 5129 5129 26.14% 28.84%

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 0 13 830927 1966.39 2103 2057 421.5
A 13 254 33897 75.54 2103 2057 421.5
A 3 137 20756 44.36 2103 2057 421.5
B 6 159 5262787 13477.2 2079 2026 390.3
B 4 80 252287 641.13 2079 2026 390.3
B 5 172 169696 429.54 2079 2026 390.3
C 3 233 1703800 3625.74 2015 2029 469.4
C 0 10 362496 768.0 2015 2029 469.4
C 14 238 322400 682.57 2015 2029 469.4
D 12 218 9638294 23992.98 1696 1656 401.6
D 8 195 4456960 11092.66 1696 1656 401.6
D 2 250 855703 2126.38 1696 1656 401.6

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