ASTROSAT CZTI

Data Quality Report

Orbit 50566

Creation date: 2025-02-02T08:06:43.000623
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/AS1T05_239T01_9000006444_50566cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50566cztM0_level2_quad_clean.evt
Size (bytes)552,464,64093,922,560
Size526.9 MB 89.6 MB
Events in quadrant A3,688,858639,688
Events in quadrant B4,504,307690,736
Events in quadrant C7,924,255476,313
Events in quadrant D3,823,439580,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153543
B0179462
C0280112
D0161692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65601532.332317%
B65603545.396341%
C6560186928.490854%
D65601832.789634%

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 7755 6560 78 78 1.01% 1.19%
B 7755 6560 220 220 2.84% 3.35%
C 7755 6561 1680 1680 21.66% 25.61%
D 7755 6561 117 117 1.51% 1.78%

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 4 3 133968 763.87 709 691 174.5
A 3 130 116348 662.88 709 691 174.5
A 5 240 96029 546.42 709 691 174.5
B 7 0 819907 5520.55 705 680 148.4
B 0 229 251138 1687.77 705 680 148.4
B 0 172 211565 1421.1 705 680 148.4
C 15 196 2165875 12587.87 615 610 172.0
C 15 195 1756850 10209.98 615 610 172.0
C 15 178 357475 2074.65 615 610 172.0
D 2 249 256278 1343.61 683 659 190.2
D 6 42 182197 954.22 683 659 190.2
D 11 161 129204 675.67 683 659 190.2

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