ASTROSAT CZTI

Data Quality Report

Orbit 18976

Creation date: 2024-06-27T17:57:22.818832
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_166T04_9000002826_18976cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18976cztM0_level2_quad_clean.evt
Size (bytes)523,615,680102,162,240
Size499.4 MB 97.4 MB
Events in quadrant A3,362,083673,466
Events in quadrant B4,413,633674,200
Events in quadrant C3,685,682658,345
Events in quadrant D3,958,722637,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136652
B0172082
C0147632
D0156922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6453420.650860%
B64533114.819464%
C64531161.797614%
D6454851.317013%

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 7813 6454 0 0 0.00% 0.00%
B 7813 6454 141 141 1.80% 2.18%
C 7813 6454 15 15 0.19% 0.23%
D 7814 6455 19 19 0.24% 0.29%

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 0 226 7613 38.86 872 856 173.9
A 13 254 7169 36.31 872 856 173.9
A 12 194 6308 31.36 872 856 173.9
B 3 112 876528 5490.41 854 837 159.5
B 7 220 187504 1170.37 854 837 159.5
B 12 111 18405 110.15 854 837 159.5
C 0 207 270750 1383.26 839 849 195.1
C 14 238 132191 673.14 839 849 195.1
C 3 233 10371 48.8 839 849 195.1
D 1 52 599138 2923.22 849 828 204.7
D 7 238 141053 685.11 849 828 204.7
D 2 234 24850 117.37 849 828 204.7

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