ASTROSAT CZTI

Data Quality Report

Orbit 20191030_A07_007T04_9000003276_level2

Creation date: 2025-12-04T21:02:14.905688
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/AS1A07_007T04_9000003276cztM0_level2.fits modeM0/AS1A07_007T04_9000003276cztM0_level2_quad_clean.evt
Size (bytes)1,163,871,3601,110,876,480
Size1.1 GB 1.0 GB
Events in quadrant A7,293,5066,796,534
Events in quadrant B6,924,9246,754,608
Events in quadrant C6,982,3426,418,810
Events in quadrant D5,937,1925,565,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01850
B01850
C01850
D01850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02487010
B02520900
C02475650
D03354050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024040
B024040
C024040
D024040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11833014501.225387%
B11833118391.554115%
C11833019671.662300%
D11833184377.130000%

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 136351 118328 0 0 0.00% 0.00%
B 136351 118313 0 0 0.00% 0.00%
C 136351 118332 0 0 0.00% 0.00%
D 136351 118148 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 6939 11.24 1897 1786 458.6
A 7 110 5660 8.45 1897 1786 458.6
A 9 19 5559 8.23 1897 1786 458.6
B 2 9 5521 10.62 1831 1751 355.0
B 3 17 4621 8.08 1831 1751 355.0
B 2 8 4600 8.02 1831 1751 355.0
C 12 241 4888 6.7 1846 1722 472.8
C 9 209 4619 6.13 1846 1722 472.8
C 3 126 4610 6.11 1846 1722 472.8
D 6 231 4355 6.31 1694 1544 445.2
D 3 14 4310 6.21 1694 1544 445.2
D 7 3 4249 6.07 1694 1544 445.2

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