ASTROSAT CZTI

Data Quality Report

Orbit 20160507_G05_241T02_9000000448_level2

Creation date: 2025-10-29T07:44:06.679859
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/AS1G05_241T02_9000000448cztM0_level2.fits modeM0/AS1G05_241T02_9000000448cztM0_level2_quad_clean.evt
Size (bytes)1,021,674,2401,046,707,200
Size974.3 MB 998.2 MB
Events in quadrant A6,074,9706,177,743
Events in quadrant B5,841,8366,228,683
Events in quadrant C6,041,0185,998,784
Events in quadrant D5,195,0765,510,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02422200
B03026760
C02435040
D02512790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023100
B023100
C023100
D023100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11359226032.291535%
B11359235643.137545%
C11359219151.685858%
D11359026392.323268%

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 131175 113589 0 0 0.00% 0.00%
B 131175 113592 0 0 0.00% 0.00%
C 131175 113579 0 0 0.00% 0.00%
D 131175 113570 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 14 188 5866 10.73 1574 1457 411.1
A 0 29 5845 10.67 1574 1457 411.1
A 7 110 5288 9.32 1574 1457 411.1
B 2 9 5021 11.25 1540 1452 317.1
B 12 226 4383 9.24 1540 1452 317.1
B 14 254 4031 8.13 1540 1452 317.1
C 1 80 4424 6.94 1595 1470 425.5
C 1 81 4417 6.93 1595 1470 425.5
C 12 241 4261 6.56 1595 1470 425.5
D 3 14 3904 6.43 1482 1341 398.4
D 4 160 3887 6.39 1482 1341 398.4
D 3 31 3843 6.28 1482 1341 398.4

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