ASTROSAT CZTI

Data Quality Report

Orbit 20191108_T03_147T01_9000003290_level2

Creation date: 2025-12-05T17:01:13.176686
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_147T01_9000003290cztM0_level2.fits modeM0/AS1T03_147T01_9000003290cztM0_level2_quad_clean.evt
Size (bytes)421,911,360219,594,240
Size402.4 MB 209.4 MB
Events in quadrant A2,665,5121,032,444
Events in quadrant B2,565,0321,037,923
Events in quadrant C2,614,260980,403
Events in quadrant D2,192,654857,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07360
B07360
C07360
D07360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0650
C0650
D0650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840120
B0847150
C0868740
D01146630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A401485571.387367%
B401486371.586629%
C401479352.328941%
D4014739339.796498%

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 89359 40148 0 0 0.00% 0.00%
B 89359 40148 0 0 0.00% 0.00%
C 89359 40142 0 0 0.00% 0.00%
D 89359 40122 0 0 0.00% 0.00%

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 29 2481 10.72 694 654 170.4
A 7 110 2153 8.8 694 654 170.4
A 9 19 2072 8.32 694 654 170.4
B 2 9 1973 9.87 678 648 134.3
B 2 8 1679 7.68 678 648 134.3
B 3 80 1674 7.64 678 648 134.3
C 1 81 1955 7.34 690 651 177.7
C 1 80 1949 7.3 690 651 177.7
C 3 126 1827 6.62 690 651 177.7
D 10 189 1633 6.51 625 574 162.7
D 15 46 1587 6.22 625 574 162.7
D 6 67 1575 6.15 625 574 162.7

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