ASTROSAT CZTI

Data Quality Report

Orbit 27153

Creation date: 2024-06-27T19:37:03.132395
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/AS1T03_245T01_9000003916_27153cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27153cztM0_level2_quad_clean.evt
Size (bytes)1,326,418,560226,059,840
Size1.2 GB 215.6 MB
Events in quadrant A8,033,0091,509,201
Events in quadrant B9,103,5301,495,085
Events in quadrant C7,668,1161,438,425
Events in quadrant D14,316,8951,330,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341140
B0371170
C0330340
D0530080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155561821.169967%
B155564492.886346%
C155562331.497814%
D15556168610.838262%

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 19011 15559 10 10 0.05% 0.06%
B 19011 15559 153 153 0.80% 0.98%
C 19011 15559 2 2 0.01% 0.01%
D 19011 15559 1443 1443 7.59% 9.27%

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 13 147644 364.73 2006 1969 399.4
A 13 248 48523 116.56 2006 1969 399.4
A 14 235 47849 114.87 2006 1969 399.4
B 15 33 983736 2677.18 1965 1922 366.7
B 3 112 194055 523.9 1965 1922 366.7
B 0 229 62667 165.64 1965 1922 366.7
C 14 238 303981 686.81 1883 1896 439.8
C 15 208 23232 48.51 1883 1896 439.8
C 13 61 13092 25.45 1883 1896 439.8
D 1 52 6041597 12635.65 1813 1787 478.0
D 7 38 583239 1216.43 1813 1787 478.0
D 2 250 276955 575.67 1813 1787 478.0

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