ASTROSAT CZTI

Data Quality Report

Orbit 35915

Creation date: 2024-06-27T21:19:59.176045
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/AS1A11_080T01_9000005146_35915cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35915cztM0_level2_quad_clean.evt
Size (bytes)529,119,36054,760,320
Size504.6 MB 52.2 MB
Events in quadrant A3,579,826342,489
Events in quadrant B4,147,282318,503
Events in quadrant C2,846,955330,889
Events in quadrant D5,106,605309,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140543
B0155202
C0111302
D0187652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084250.491739%
B50844759.343037%
C5084851.671912%
D50842555.015736%

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 7207 5085 4 4 0.06% 0.08%
B 7207 5085 324 324 4.50% 6.37%
C 7207 5085 57 57 0.79% 1.12%
D 7207 5085 234 234 3.25% 4.60%

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 15 169 848278 6550.42 644 634 129.4
A 10 83 163135 1255.78 644 634 129.4
A 9 143 42063 320.16 644 634 129.4
B 5 172 1411975 12334.26 608 594 114.4
B 5 63 200696 1748.72 608 594 114.4
B 5 255 65047 563.26 608 594 114.4
C 0 10 230113 1621.4 612 618 141.5
C 15 214 215378 1517.3 612 618 141.5
C 0 207 10232 67.92 612 618 141.5
D 12 227 958179 6349.33 612 596 150.8
D 1 52 837726 5550.66 612 596 150.8
D 8 195 341261 2258.81 612 596 150.8

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