ASTROSAT CZTI

Data Quality Report

Orbit 27706

Creation date: 2024-06-27T19:43:21.818520
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/AS1T03_262T01_9000003988_27706cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27706cztM0_level2_quad_clean.evt
Size (bytes)459,774,72097,796,160
Size438.5 MB 93.3 MB
Events in quadrant A3,102,880641,825
Events in quadrant B3,293,505657,703
Events in quadrant C3,304,205630,059
Events in quadrant D3,801,605598,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130530
B0136610
C0136190
D0154840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216430.691763%
B6216620.997426%
C6216941.512227%
D62161552.493565%

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 7521 6216 6 6 0.08% 0.10%
B 7521 6216 4 4 0.05% 0.06%
C 7521 6217 0 0 0.00% 0.00%
D 7521 6217 98 98 1.30% 1.58%

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 8 192 15354 91.58 799 784 159.1
A 13 254 10673 62.16 799 784 159.1
A 3 137 7115 39.79 799 784 159.1
B 0 230 77378 515.81 802 785 148.5
B 0 190 19574 126.53 802 785 148.5
B 12 111 17649 113.57 802 785 148.5
C 14 238 126002 689.13 783 790 181.7
C 3 233 72905 396.9 783 790 181.7
C 15 208 38371 206.83 783 790 181.7
D 1 52 460908 2569.09 768 750 179.1
D 11 176 277548 1545.38 768 750 179.1
D 2 250 112569 624.29 768 750 179.1

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