ASTROSAT CZTI

Data Quality Report

Orbit 01557

Creation date: 2024-06-27T14:12:25.840749
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/AS1G02_019T04_9000000262_01557cztM0_level2.evt modeM0/AS1G02_019T04_9000000262_01557cztM0_level2_quad_clean.evt
Size (bytes)1,043,982,72075,741,120
Size995.6 MB 72.2 MB
Events in quadrant A7,882,051458,701
Events in quadrant B8,090,159467,898
Events in quadrant C7,626,695461,270
Events in quadrant D7,581,557446,720

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280992
B0287201
C0273341
D0272021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586300.455512%
B6586230.349226%
C6586630.956575%
D65861141.730944%

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 7401 6587 161 161 2.18% 2.44%
B 7401 6587 181 181 2.45% 2.75%
C 7401 6587 196 196 2.65% 2.98%
D 7401 6587 229 229 3.09% 3.48%

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 10 2 7899 11.7 2059 2075 497.8
A 13 9 5058 5.99 2059 2075 497.8
A -1 -1 -1 -1.0 2059 2075 497.8
B 0 220 26022 47.61 2123 2136 501.7
B 4 170 13611 22.87 2123 2136 501.7
B 0 234 8581 12.85 2123 2136 501.7
C 14 223 209586 390.14 1899 1970 532.2
C 8 208 5870 7.33 1899 1970 532.2
C 5 172 5187 6.04 1899 1970 532.2
D 13 105 365010 631.18 1850 1917 575.3
D 10 84 122413 209.46 1850 1917 575.3
D 13 53 81757 138.79 1850 1917 575.3

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