ASTROSAT CZTI

Data Quality Report

Orbit 00578

Creation date: 2024-06-27T13:59:58.021747
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_014T01_9000000080_00578cztM0_level2.evt modeM0/AS1P01_014T01_9000000080_00578cztM0_level2_quad_clean.evt
Size (bytes)832,711,68077,077,440
Size794.1 MB 73.5 MB
Events in quadrant A6,468,489491,798
Events in quadrant B6,591,983500,013
Events in quadrant C5,709,436495,128
Events in quadrant D6,094,513473,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230163
B0233462
C0207492
D0218932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5329180.337774%
B5329470.881967%
C532940.075061%
D5329340.638018%

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 7483 5330 144 144 1.92% 2.70%
B 7483 5330 185 185 2.47% 3.47%
C 7483 5330 34 34 0.45% 0.64%
D 7483 5330 191 191 2.55% 3.58%

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 0 149 119046 324.44 1615 1601 362.0
A 15 17 35739 94.3 1615 1601 362.0
A 0 238 34304 90.34 1615 1601 362.0
B 5 251 210616 549.96 1617 1628 380.0
B 6 202 61908 158.63 1617 1628 380.0
B 4 206 58209 148.9 1617 1628 380.0
C 15 241 39736 95.63 1433 1483 400.0
C 5 249 14251 31.92 1433 1483 400.0
C 9 241 13125 29.11 1433 1483 400.0
D 1 4 516208 1207.89 1369 1423 426.2
D 12 237 80995 186.71 1369 1423 426.2
D 13 221 77349 178.15 1369 1423 426.2

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