ASTROSAT CZTI

Data Quality Report

Orbit 10890

Creation date: 2024-06-27T16:05:16.308033
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/AS1A04_055T01_9000001574_10890cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10890cztM0_level2_quad_clean.evt
Size (bytes)587,632,320101,027,520
Size560.4 MB 96.3 MB
Events in quadrant A4,450,176630,843
Events in quadrant B4,737,691634,840
Events in quadrant C3,325,586653,215
Events in quadrant D4,766,041609,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182983
B0192212
C0156172
D0195662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76202212.900262%
B76204095.367454%
C7620230.301837%
D76202583.385827%

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 8256 7623 82 82 0.99% 1.08%
B 8256 7623 203 203 2.46% 2.66%
C 8256 7623 1 1 0.01% 0.01%
D 8256 7623 175 175 2.12% 2.30%

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 8 5 1036626 5753.05 870 849 180.0
A 11 29 24218 129.8 870 849 180.0
A 5 16 11050 56.66 870 849 180.0
B 4 239 1240876 7455.24 869 848 166.3
B 0 214 36248 212.83 869 848 166.3
B 0 219 21836 126.18 869 848 166.3
C 14 234 7595 33.88 849 851 199.0
C 13 61 6494 28.35 849 851 199.0
C 8 128 3437 12.99 849 851 199.0
D 10 199 677148 3325.21 836 812 203.4
D 1 52 362315 1777.33 836 812 203.4
D 5 222 133282 651.29 836 812 203.4

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