ASTROSAT CZTI

Data Quality Report

Orbit 31001

Creation date: 2024-06-27T20:22:08.586302
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/AS1A10_071T48_9000004478_31001cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_31001cztM0_level2_quad_clean.evt
Size (bytes)551,430,72097,093,440
Size525.9 MB 92.6 MB
Events in quadrant A3,180,274645,939
Events in quadrant B5,186,583639,563
Events in quadrant C3,733,067603,804
Events in quadrant D4,160,119597,881

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136822
B0199071
C0153651
D0166821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6495721.108545%
B64961211.862685%
C64962433.740764%
D64962483.817734%

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 7530 6496 0 0 0.00% 0.00%
B 7531 6496 6 6 0.08% 0.09%
C 7531 6496 70 70 0.93% 1.08%
D 7531 6497 200 200 2.66% 3.08%

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 13 254 12183 68.34 823 804 166.5
A 3 137 7951 42.92 823 804 166.5
A 0 226 6890 36.55 823 804 166.5
B 6 159 1872969 12140.58 807 788 154.2
B 0 155 55055 351.91 807 788 154.2
B 4 80 23194 145.3 807 788 154.2
C 0 10 467694 2570.15 776 779 181.7
C 14 238 125247 685.14 776 779 181.7
C 3 233 57688 313.26 776 779 181.7
D 13 174 474039 2525.95 793 772 187.4
D 12 33 245568 1306.54 793 772 187.4
D 8 195 204408 1086.86 793 772 187.4

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