ASTROSAT CZTI

Data Quality Report

Orbit 01028

Creation date: 2024-06-27T14:06:22.725095
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/AS1P01_998T02_9000000190_01028cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01028cztM0_level2_quad_clean.evt
Size (bytes)1,021,271,040104,572,800
Size974.0 MB 99.7 MB
Events in quadrant A7,145,953713,091
Events in quadrant B7,280,703710,413
Events in quadrant C9,430,125655,056
Events in quadrant D6,680,911675,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254031
B0258371
C0322741
D0240711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5913611.031625%
B5913691.166920%
C59135909.978015%
D5913851.437511%

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 7078 5914 273 273 3.86% 4.62%
B 7078 5914 257 257 3.63% 4.35%
C 7078 5914 1460 1460 20.63% 24.69%
D 7078 5914 240 240 3.39% 4.06%

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 0 253 103957 234.52 1816 1822 435.5
A 4 32 53612 118.92 1816 1822 435.5
A 12 189 15899 32.32 1816 1822 435.5
B 5 249 57875 128.35 1869 1870 436.3
B 15 85 20076 41.72 1869 1870 436.3
B 15 22 18043 37.07 1869 1870 436.3
C 8 208 2488462 5300.36 1686 1742 469.2
C 15 241 280952 595.13 1686 1742 469.2
C 3 79 28857 57.79 1686 1742 469.2
D 2 54 135271 257.02 1692 1749 519.5
D 10 125 60000 112.13 1692 1749 519.5
D 13 73 53438 99.5 1692 1749 519.5

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