ASTROSAT CZTI

Data Quality Report

Orbit 16227

Creation date: 2024-06-27T17:19:38.445254
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/AS1T02_112T01_9000002390_16227cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16227cztM0_level2_quad_clean.evt
Size (bytes)483,105,600111,188,160
Size460.7 MB 106.0 MB
Events in quadrant A3,688,951733,772
Events in quadrant B3,784,387742,252
Events in quadrant C3,458,123725,094
Events in quadrant D3,262,388717,528

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149543
B0153002
C0143182
D0137922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64372654.116825%
B64371652.563306%
C64371782.765263%
D64371011.569054%

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 7608 6439 108 108 1.42% 1.68%
B 7608 6439 33 33 0.43% 0.51%
C 7608 6439 13 13 0.17% 0.20%
D 7608 6439 4 4 0.05% 0.06%

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 388893 2266.24 854 841 171.2
A 13 248 9537 50.78 854 841 171.2
A 0 226 7672 39.89 854 841 171.2
B 0 244 126859 787.94 846 827 160.0
B 4 173 87372 541.07 846 827 160.0
B 0 198 61373 378.53 846 827 160.0
C 14 238 126136 673.26 812 819 186.1
C 0 207 117445 626.57 812 819 186.1
C 3 233 33311 174.56 812 819 186.1
D 1 52 39813 189.89 839 815 205.4
D 2 234 24235 114.03 839 815 205.4
D 10 70 23022 108.13 839 815 205.4

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