ASTROSAT CZTI

Data Quality Report

Orbit 30441

Creation date: 2024-06-27T20:15:17.221435
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_121T02_9000004378_30441cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30441cztM0_level2_quad_clean.evt
Size (bytes)526,775,04085,944,960
Size502.4 MB 82.0 MB
Events in quadrant A3,288,342556,886
Events in quadrant B4,996,840556,320
Events in quadrant C3,752,979543,840
Events in quadrant D3,516,805534,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136381
B0185651
C0152331
D0146162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5886991.681957%
B58871542.615933%
C58871963.329370%
D58861001.698947%

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 7201 5886 2 2 0.03% 0.03%
B 7202 5887 2 2 0.03% 0.03%
C 7202 5887 20 20 0.28% 0.34%
D 7201 5886 27 27 0.37% 0.46%

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 44192 263.28 835 822 164.7
A 8 192 11868 67.06 835 822 164.7
A 13 254 10236 57.15 835 822 164.7
B 6 159 1715746 11159.38 825 808 153.7
B 12 111 17720 110.05 825 808 153.7
B 0 229 17567 109.05 825 808 153.7
C 3 233 420418 2252.35 811 820 186.3
C 14 238 132584 707.29 811 820 186.3
C 15 159 20281 104.46 811 820 186.3
D 8 195 158309 821.63 821 804 191.7
D 7 238 80311 414.75 821 804 191.7
D 13 249 57684 296.72 821 804 191.7

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