ASTROSAT CZTI

Data Quality Report

Orbit 19526

Creation date: 2024-06-27T18:03:53.073604
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/AS1T03_108T01_9000002898_19526cztM0_level2.evt modeM0/AS1T03_108T01_9000002898_19526cztM0_level2_quad_clean.evt
Size (bytes)444,196,80073,157,760
Size423.6 MB 69.8 MB
Events in quadrant A3,146,504457,872
Events in quadrant B3,267,444463,135
Events in quadrant C3,178,372442,382
Events in quadrant D3,455,918435,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125551
B0129911
C0127211
D0137451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5956601.007388%
B5957881.477254%
C5957801.342958%
D59561051.762928%

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 7256 5957 1 1 0.01% 0.02%
B 7257 5957 11 11 0.15% 0.18%
C 7257 5958 2 2 0.03% 0.03%
D 7256 5957 55 55 0.76% 0.92%

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 8228 45.67 815 801 162.6
A 0 226 7221 39.48 815 801 162.6
A 3 137 6132 32.78 815 801 162.6
B 0 244 51281 332.98 800 783 151.7
B 0 230 30463 195.71 800 783 151.7
B 7 220 22617 143.97 800 783 151.7
C 14 238 122233 686.51 765 772 176.9
C 3 233 44265 245.83 765 772 176.9
C 9 221 20617 112.17 765 772 176.9
D 12 233 158805 821.1 787 766 192.5
D 1 52 96627 498.05 787 766 192.5
D 13 104 76445 393.19 787 766 192.5

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