ASTROSAT CZTI

Data Quality Report

Orbit 06354

Creation date: 2024-06-27T15:06:06.115705
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/AS1A02_124T01_9000000842_06354cztM0_level2.evt modeM0/AS1A02_124T01_9000000842_06354cztM0_level2_quad_clean.evt
Size (bytes)546,433,92067,587,840
Size521.1 MB 64.5 MB
Events in quadrant A4,695,022400,091
Events in quadrant B4,248,065398,667
Events in quadrant C3,140,287411,712
Events in quadrant D4,032,751389,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185253
B0165122
C0134362
D0160262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63912053.207636%
B63914667.291504%
C63911061.658582%
D63911902.972931%

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 7636 6392 12 12 0.16% 0.19%
B 7636 6392 338 338 4.43% 5.29%
C 7636 6392 0 0 0.00% 0.00%
D 7636 6392 68 68 0.89% 1.06%

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 8 15 1152500 7235.7 801 785 159.2
A 15 236 433529 2718.73 801 785 159.2
A 15 174 11318 66.17 801 785 159.2
B 0 228 1048297 7040.38 799 782 148.8
B 0 219 48737 322.31 799 782 148.8
B 15 204 43709 288.51 799 782 148.8
C 4 254 46128 253.73 789 794 178.7
C 1 16 8059 40.66 789 794 178.7
C 13 61 6192 30.21 789 794 178.7
D 12 220 509307 2670.62 786 761 190.4
D 4 95 248048 1298.62 786 761 190.4
D 11 241 79206 411.95 786 761 190.4

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