ASTROSAT CZTI

Data Quality Report

Orbit 21306

Creation date: 2024-06-27T18:26:10.248571
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_140T01_9000003142_21306cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21306cztM0_level2_quad_clean.evt
Size (bytes)536,166,720106,260,480
Size511.3 MB 101.3 MB
Events in quadrant A3,279,134728,144
Events in quadrant B3,207,487733,284
Events in quadrant C3,039,712694,460
Events in quadrant D6,312,289650,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135021
B0132751
C0126761
D0229601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58921131.917855%
B5893671.136942%
C5892901.527495%
D589270812.016293%

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 7232 5892 50 50 0.69% 0.85%
B 7233 5893 10 10 0.14% 0.17%
C 7232 5893 0 0 0.00% 0.00%
D 7232 5892 701 701 9.69% 11.90%

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 169957 1065.46 795 784 158.8
A 9 143 15564 93.09 795 784 158.8
A 12 96 11371 66.68 795 784 158.8
B 0 190 43946 290.44 783 766 148.7
B 3 64 31199 204.7 783 766 148.7
B 0 189 21327 138.3 783 766 148.7
C 14 238 120536 698.75 744 750 171.4
C 0 10 6555 33.86 744 750 171.4
C 3 233 5932 30.23 744 750 171.4
D 1 52 2475433 13783.27 741 722 179.5
D 13 174 468834 2607.22 741 722 179.5
D 12 235 288665 1603.74 741 722 179.5

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