ASTROSAT CZTI

Data Quality Report

Orbit 23525

Creation date: 2024-06-27T18:55:42.838551
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/AS1A07_011T01_9000003482_23525cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23525cztM0_level2_quad_clean.evt
Size (bytes)536,472,00098,867,520
Size511.6 MB 94.3 MB
Events in quadrant A3,608,578626,864
Events in quadrant B4,391,593629,502
Events in quadrant C3,711,310607,848
Events in quadrant D4,018,531599,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156592
B0178154
C0158612
D0169712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76161401.838235%
B76152583.388050%
C76151772.324360%
D76151672.193040%

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 7961 7616 2 2 0.03% 0.03%
B 7960 7615 62 62 0.78% 0.81%
C 7960 7615 3 3 0.04% 0.04%
D 7960 7616 49 49 0.62% 0.64%

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 13 254 14191 70.53 932 911 188.3
A 10 253 10671 51.83 932 911 188.3
A 0 226 8187 38.64 932 911 188.3
B 0 189 493558 2825.64 915 891 174.4
B 3 64 118020 671.78 915 891 174.4
B 0 230 64872 366.96 915 891 174.4
C 14 238 139511 681.48 881 884 203.4
C 2 16 71540 347.34 881 884 203.4
C 0 10 19778 92.88 881 884 203.4
D 1 52 292760 1327.08 901 873 219.9
D 7 238 180385 816.16 901 873 219.9
D 2 234 35052 155.4 901 873 219.9

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