ASTROSAT CZTI

Data Quality Report

Orbit 34503

Creation date: 2022-02-14T10:47:51.773611
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_156T01_9000004928_34503cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34503cztM0_level2_quad_clean.evt
Size (bytes)1,360,918,080173,770,560
Size1.3 GB 165.7 MB
Events in quadrant A6,921,8951,090,406
Events in quadrant B10,270,7101,088,249
Events in quadrant C7,433,8261,099,606
Events in quadrant D15,577,844948,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03146
B03146
C03168
D03137

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031419755
B041690882
C032391746
D0581011215

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14997340.226712%
B1499811807.867716%
C14999230.153344%
D14979176911.809867%

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 19488 15060 11 11 0.06% 0.07%
B 19462 15069 727 727 3.74% 4.82%
C 19462 15052 12 12 0.06% 0.08%
D 19491 15038 1526 1526 7.83% 10.15%

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 9 143 83584 238.55 1726 1691 343.3
A 10 83 69583 197.77 1726 1691 343.3
A 15 169 47751 134.17 1726 1691 343.3
B 5 172 2944713 9307.92 1656 1613 316.2
B 0 229 347922 1095.25 1656 1613 316.2
B 4 171 209830 658.51 1656 1613 316.2
C 15 214 631128 1646.52 1666 1678 382.3
C 14 67 190937 495.06 1666 1678 382.3
C 0 10 76877 196.71 1666 1678 382.3
D 8 195 2771031 7193.99 1582 1539 385.0
D 2 250 1817341 4716.7 1582 1539 385.0
D 10 204 1430961 3713.04 1582 1539 385.0

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