ASTROSAT CZTI

Data Quality Report

Orbit 20470

Creation date: 2024-06-27T18:15:45.968241
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/AS1A05_208T03_9000003026_20470cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20470cztM0_level2_quad_clean.evt
Size (bytes)369,803,52067,835,520
Size352.7 MB 64.7 MB
Events in quadrant A2,466,413429,077
Events in quadrant B2,774,271432,056
Events in quadrant C2,486,385420,088
Events in quadrant D3,118,252408,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107012
B0114911
C0107051
D0126511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5198771.481339%
B51981212.327818%
C5198991.904579%
D51981272.443247%

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 5838 5198 2 2 0.03% 0.04%
B 5838 5198 17 17 0.29% 0.33%
C 5838 5198 0 0 0.00% 0.00%
D 5838 5198 54 54 0.92% 1.04%

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 9 143 17552 132.02 633 618 128.3
A 13 254 6846 48.55 633 618 128.3
A 0 226 5492 38.0 633 618 128.3
B 7 220 131242 1074.04 631 613 121.6
B 0 189 83222 679.21 631 613 121.6
B 0 197 17379 137.85 631 613 121.6
C 14 238 94505 655.34 611 616 143.3
C 9 221 7949 51.18 611 616 143.3
C 13 61 4286 25.62 611 616 143.3
D 1 52 549878 3637.68 618 600 151.0
D 5 222 114815 756.41 618 600 151.0
D 15 0 58037 380.39 618 600 151.0

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