ASTROSAT CZTI

Data Quality Report

Orbit 26798

Creation date: 2024-06-27T19:33:05.042492
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/AS1A09_079T01_9000003864_26798cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26798cztM0_level2_quad_clean.evt
Size (bytes)556,536,96097,369,920
Size530.8 MB 92.9 MB
Events in quadrant A3,285,746631,538
Events in quadrant B3,127,909641,342
Events in quadrant C3,228,197623,796
Events in quadrant D6,765,593591,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139480
B0135810
C0138600
D0247200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65901021.547800%
B65901201.820941%
C65911342.033075%
D659166510.089516%

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 6840 6592 0 0 0.00% 0.00%
B 6840 6592 0 0 0.00% 0.00%
C 6841 6593 13 13 0.19% 0.20%
D 6841 6593 520 520 7.60% 7.89%

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 13 232969 1444.92 791 772 160.7
A 13 254 10329 59.47 791 772 160.7
A 3 137 7563 42.26 791 772 160.7
B 10 246 22849 146.94 785 763 150.3
B 12 111 18284 116.57 785 763 150.3
B 15 33 17801 113.35 785 763 150.3
C 14 238 121362 672.54 764 767 179.3
C 15 208 81949 452.74 764 767 179.3
C 2 16 36194 197.57 764 767 179.3
D 1 52 2654539 14660.67 750 731 181.0
D 7 80 1028204 5676.16 750 731 181.0
D 2 250 200008 1100.88 750 731 181.0

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