ASTROSAT CZTI

Data Quality Report

Orbit 26928

Creation date: 2024-06-27T19:34:36.861160
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_134T01_9000003896_26928cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26928cztM0_level2_quad_clean.evt
Size (bytes)1,061,752,32082,189,440
Size1012.6 MB 78.4 MB
Events in quadrant A15,897,108101,750
Events in quadrant B4,404,156665,597
Events in quadrant C3,444,935652,182
Events in quadrant D7,938,273580,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0518890
B0174010
C0146100
D0284570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6969690799.110346%
B69693745.366624%
C69701642.352941%
D696998914.191419%

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 7153 6968 5798 5798 81.06% 83.21%
B 7154 6971 131 131 1.83% 1.88%
C 7155 6973 4 4 0.06% 0.06%
D 7153 6972 945 945 13.21% 13.55%

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 14 235 15135725 382412.57 186 182 39.6
A 0 13 25022 627.6 186 182 39.6
A 8 192 12611 314.03 186 182 39.6
B 3 64 544973 3364.22 844 824 161.7
B 0 189 345664 2131.99 844 824 161.7
B 0 190 61266 373.69 844 824 161.7
C 14 238 131599 669.76 829 833 195.2
C 15 208 66000 333.78 829 833 195.2
C 8 128 9032 41.99 829 833 195.2
D 7 80 3801668 19183.62 801 780 198.1
D 2 250 732709 3694.15 801 780 198.1
D 12 233 233625 1175.2 801 780 198.1

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