ASTROSAT CZTI

Data Quality Report

Orbit 20210616_C06_007T01_9000004470_level2

Creation date: 2025-12-27T02:27:36.138023
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/AS1C06_007T01_9000004470cztM0_level2.fits modeM0/AS1C06_007T01_9000004470cztM0_level2_quad_clean.evt
Size (bytes)1,036,342,080854,069,760
Size988.3 MB 814.5 MB
Events in quadrant A6,549,7125,032,668
Events in quadrant B6,114,6464,909,467
Events in quadrant C6,022,8124,437,947
Events in quadrant D5,317,7464,110,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02297450
B03525590
C02496240
D03262200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01650
C01650
D01650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021900
B021900
C021900
D021900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10756321071.958852%
B10756342173.920493%
C107563104199.686416%
D10756379537.393806%

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 124073 107537 0 0 0.00% 0.00%
B 124073 107539 0 0 0.00% 0.00%
C 124073 107295 0 0 0.00% 0.00%
D 124073 107417 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 5368 9.0 1706 1605 418.0
A 7 110 5105 8.37 1706 1605 418.0
A 9 19 4875 7.82 1706 1605 418.0
B 2 9 4856 10.55 1619 1546 313.9
B 3 80 4185 8.41 1619 1546 313.9
B 2 8 4123 8.21 1619 1546 313.9
C 12 241 4258 6.91 1597 1493 400.3
C 3 126 4122 6.57 1597 1493 400.3
C 3 187 4059 6.41 1597 1493 400.3
D 15 47 3866 6.21 1520 1386 399.5
D 7 3 3810 6.07 1520 1386 399.5
D 10 189 3805 6.05 1520 1386 399.5

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