ASTROSAT CZTI

Data Quality Report

Orbit 23258

Creation date: 2024-06-27T18:51:56.905497
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/AS1A08_004T03_9000003438_23258cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23258cztM0_level2_quad_clean.evt
Size (bytes)456,770,880106,355,520
Size435.6 MB 101.4 MB
Events in quadrant A3,271,616712,229
Events in quadrant B3,322,282721,272
Events in quadrant C3,333,444669,649
Events in quadrant D3,464,890665,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139062
B0140342
C0140743
D0142742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494540.831537%
B6494630.970126%
C6493751.155090%
D6493430.662252%

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 7619 6494 0 0 0.00% 0.00%
B 7619 6494 1 1 0.01% 0.02%
C 7618 6493 1 1 0.01% 0.02%
D 7618 6493 7 7 0.09% 0.11%

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 10463 56.64 848 831 170.1
A 0 226 7481 39.1 848 831 170.1
A 3 137 7092 36.82 848 831 170.1
B 12 111 18824 114.4 838 818 157.4
B 11 111 16833 101.75 838 818 157.4
B 0 229 15985 96.36 838 818 157.4
C 14 238 127645 687.64 793 801 184.5
C 0 207 76347 409.55 793 801 184.5
C 10 9 14340 73.4 793 801 184.5
D 1 239 121335 606.8 817 794 198.7
D 2 152 77771 387.5 817 794 198.7
D 12 233 51573 255.62 817 794 198.7

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