ASTROSAT CZTI

Data Quality Report

Orbit 19989

Creation date: 2024-06-27T18:09:45.394118
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/AS1A06_002T02_9000002982_19989cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19989cztM0_level2_quad_clean.evt
Size (bytes)541,514,88071,570,880
Size516.4 MB 68.3 MB
Events in quadrant A4,025,592439,103
Events in quadrant B3,945,635440,563
Events in quadrant C4,042,764419,853
Events in quadrant D3,953,644422,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160582
B0160662
C0163242
D0161242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63762423.795483%
B63761672.619197%
C63762243.513174%
D63761612.525094%

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 7701 6376 93 93 1.21% 1.46%
B 7701 6376 18 18 0.23% 0.28%
C 7701 6376 6 6 0.08% 0.09%
D 7701 6376 55 55 0.71% 0.86%

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 14 238 387269 2151.12 914 900 179.6
A 14 254 88759 489.16 914 900 179.6
A 13 252 37217 202.2 914 900 179.6
B 7 220 144152 856.53 908 890 167.3
B 0 197 109510 649.42 908 890 167.3
B 0 245 32220 187.32 908 890 167.3
C 3 233 354347 1778.14 875 885 198.8
C 14 238 139219 695.91 875 885 198.8
C 0 207 113604 567.05 875 885 198.8
D 1 52 272633 1265.07 900 880 214.8
D 12 218 217917 1010.35 900 880 214.8
D 2 234 26004 116.96 900 880 214.8

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