ASTROSAT CZTI

Data Quality Report

Orbit 00305

Creation date: 2024-06-27T13:58:58.299644
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/AS1P01_126T04_9000000036_00305cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00305cztM0_level2_quad_clean.evt
Size (bytes)846,308,16070,142,400
Size807.1 MB 66.9 MB
Events in quadrant A6,633,747436,757
Events in quadrant B6,532,141443,460
Events in quadrant C6,115,968428,562
Events in quadrant D5,977,102424,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236983
B0233752
C0221652
D0217762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558820.035791%
B558890.161059%
C558850.089477%
D5588240.429492%

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 7323 5589 135 135 1.84% 2.42%
B 7323 5589 80 80 1.09% 1.43%
C 7323 5589 60 60 0.82% 1.07%
D 7323 5589 94 94 1.28% 1.68%

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 6 19199 46.68 1703 1698 374.9
A 15 127 11030 24.89 1703 1698 374.9
A 12 189 5899 11.21 1703 1698 374.9
B 0 207 33970 81.89 1682 1695 394.1
B 8 54 21970 51.44 1682 1695 394.1
B 0 182 15837 35.88 1682 1695 394.1
C 2 192 136959 320.24 1506 1554 422.8
C 1 1 35949 81.35 1506 1554 422.8
C 10 19 13039 27.16 1506 1554 422.8
D 1 5 100150 213.63 1462 1520 461.7
D 13 216 81753 173.78 1462 1520 461.7
D 7 85 80215 170.45 1462 1520 461.7

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