ASTROSAT CZTI

Data Quality Report

Orbit 04257

Creation date: 2024-06-27T14:39:26.919264
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/AS1G05_240T01_9000000536_04257cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04257cztM0_level2_quad_clean.evt
Size (bytes)511,830,72052,300,800
Size488.1 MB 49.9 MB
Events in quadrant A3,549,834290,848
Events in quadrant B4,133,386294,621
Events in quadrant C2,921,603286,078
Events in quadrant D4,475,318278,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144362
B0163661
C0127821
D0176331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62062063.319368%
B62061822.932646%
C6206681.095714%
D62062283.673864%

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 7276 6207 73 73 1.00% 1.18%
B 7276 6207 26 26 0.36% 0.42%
C 7276 6207 0 0 0.00% 0.00%
D 7276 6207 139 139 1.91% 2.24%

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 0 50 487109 3164.59 754 736 153.7
A 0 149 62399 401.21 754 736 153.7
A 8 15 49823 319.39 754 736 153.7
B 5 184 561090 3849.34 760 742 145.6
B 3 0 510613 3502.58 760 742 145.6
B 0 183 23996 159.74 760 742 145.6
C 9 144 78524 460.27 727 731 169.0
C 13 61 6082 31.66 727 731 169.0
C 10 65 3991 19.29 727 731 169.0
D 11 132 614670 3479.91 720 697 176.4
D 2 232 411642 2329.17 720 697 176.4
D 9 85 386862 2188.72 720 697 176.4

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