ASTROSAT CZTI

Data Quality Report

Orbit 13228

Creation date: 2024-06-27T16:38:06.092555
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/AS1A04_216T01_9000001968_13228cztM0_level2.evt modeM0/AS1A04_216T01_9000001968_13228cztM0_level2_quad_clean.evt
Size (bytes)528,019,200101,344,320
Size503.6 MB 96.6 MB
Events in quadrant A3,024,140692,332
Events in quadrant B4,715,747648,438
Events in quadrant C2,918,681685,096
Events in quadrant D4,911,871610,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130863
B0180812
C0128122
D0187772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6199190.306501%
B619971911.598645%
C619990.145185%
D61994877.856106%

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 7525 6201 1 1 0.01% 0.02%
B 7525 6201 454 454 6.03% 7.32%
C 7525 6201 2 2 0.03% 0.03%
D 7525 6201 396 396 5.26% 6.39%

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 15 239 27047 169.92 766 753 154.7
A 12 189 22105 137.98 766 753 154.7
A 8 15 16092 99.12 766 753 154.7
B 4 239 1607951 11823.37 727 709 135.9
B 3 64 147834 1082.3 727 709 135.9
B 0 219 38188 275.71 727 709 135.9
C 14 234 20382 115.32 741 747 170.3
C 7 236 5748 29.37 741 747 170.3
C 13 61 5366 27.13 741 747 170.3
D 1 52 2031943 12100.02 704 684 167.9
D 8 195 140853 834.97 704 684 167.9
D 5 222 51666 303.69 704 684 167.9

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