ASTROSAT CZTI

Data Quality Report

Orbit 00905

Creation date: 2024-06-27T14:04:43.755844
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_165T08_9000000182_00905cztM0_level2.evt modeM0/AS1P01_165T08_9000000182_00905cztM0_level2_quad_clean.evt
Size (bytes)1,144,958,40094,219,200
Size1.1 GB 89.9 MB
Events in quadrant A7,726,684632,779
Events in quadrant B11,801,883546,020
Events in quadrant C7,539,433615,447
Events in quadrant D7,171,654600,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276470
B0399100
C0270730
D0260060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A658150.075976%
B6580134120.379939%
C658040.060790%
D6580120.182371%

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 7241 6582 153 153 2.11% 2.32%
B 7240 6581 1980 1980 27.35% 30.09%
C 7240 6581 113 113 1.56% 1.72%
D 7240 6581 88 88 1.22% 1.34%

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 15 127 19491 36.13 2008 2023 483.5
A 11 79 9951 16.4 2008 2023 483.5
A 3 111 6851 9.99 2008 2023 483.5
B 3 0 4480969 10195.16 1854 1863 439.3
B 5 191 142432 319.96 1854 1863 439.3
B 5 249 52907 116.18 1854 1863 439.3
C 9 83 160536 306.04 1856 1914 518.3
C 15 241 63611 119.04 1856 1914 518.3
C 3 111 27935 50.2 1856 1914 518.3
D 12 188 249115 438.55 1813 1876 563.8
D 2 16 45419 77.24 1813 1876 563.8
D 10 157 23896 39.06 1813 1876 563.8

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