ASTROSAT CZTI

Data Quality Report

Orbit 32201

Creation date: 2024-06-27T20:37:31.129399
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/AS1A09_131T01_9000004690_32201cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32201cztM0_level2_quad_clean.evt
Size (bytes)1,283,797,440203,722,560
Size1.2 GB 194.3 MB
Events in quadrant A6,770,6441,350,752
Events in quadrant B11,360,7041,349,322
Events in quadrant C7,979,5201,256,058
Events in quadrant D11,813,0231,235,505

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293731
B0443801
C0326221
D0441741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141622191.546392%
B141624593.241068%
C14162208414.715436%
D14162181812.837170%

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 15107 14164 40 40 0.26% 0.28%
B 15107 14164 125 125 0.83% 0.88%
C 15107 14164 26 26 0.17% 0.18%
D 15107 14164 1162 1162 7.69% 8.20%

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 15 174 189793 560.94 1681 1647 335.4
A 9 143 56815 164.48 1681 1647 335.4
A 13 254 29095 81.83 1681 1647 335.4
B 6 159 3880297 12455.56 1654 1610 311.4
B 5 172 548217 1755.31 1654 1610 311.4
B 0 190 141956 450.69 1654 1610 311.4
C 14 238 773140 2187.89 1519 1529 352.7
C 14 254 720820 2039.54 1519 1529 352.7
C 0 10 288126 812.64 1519 1529 352.7
D 12 218 3130798 8613.45 1534 1490 363.3
D 8 195 1444471 3971.82 1534 1490 363.3
D 13 249 452216 1240.63 1534 1490 363.3

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