ASTROSAT CZTI

Data Quality Report

Orbit 33655

Creation date: 2024-06-27T20:51:08.997113
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/AS1T04_076T01_9000004810_33655cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33655cztM0_level2_quad_clean.evt
Size (bytes)495,887,04079,162,560
Size472.9 MB 75.5 MB
Events in quadrant A2,799,624517,179
Events in quadrant B3,801,032520,744
Events in quadrant C4,206,454524,443
Events in quadrant D3,881,733493,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113293
B0145462
C0163782
D0148722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4859230.473348%
B48594058.335048%
C48592745.639020%
D48591272.613707%

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 6981 4860 13 13 0.19% 0.27%
B 6981 4859 313 313 4.48% 6.44%
C 6981 4860 210 210 3.01% 4.32%
D 6981 4860 128 128 1.83% 2.63%

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 15 169 204434 1566.33 648 639 130.1
A 15 237 69646 530.37 648 639 130.1
A 13 6 10070 72.48 648 639 130.1
B 5 172 1042052 8781.04 634 621 118.6
B 0 229 110842 929.35 634 621 118.6
B 5 200 33223 274.89 634 621 118.6
C 3 233 1220644 8513.34 628 637 143.3
C 0 10 256239 1783.62 628 637 143.3
C 15 214 220262 1532.57 628 637 143.3
D 8 195 743501 4721.19 629 616 157.4
D 13 249 301550 1912.5 629 616 157.4
D 7 223 98825 624.14 629 616 157.4

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