ASTROSAT CZTI

Data Quality Report

Orbit 54650

Creation date: 2025-11-04T08:33:18.370827
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/AS1A14_066T07_9000006522_54650cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54650cztM0_level2_quad_clean.evt
Size (bytes)595,765,440100,984,320
Size568.2 MB 96.3 MB
Events in quadrant A4,168,447680,778
Events in quadrant B3,776,606729,703
Events in quadrant C4,649,318638,704
Events in quadrant D8,898,108505,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177302
B0166442
C0189484
D0313755

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72233154.361069%
B72232683.710370%
C72223314.583218%
D7220164822.825485%

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 7648 7224 196 196 2.56% 2.71%
B 7648 7224 119 119 1.56% 1.65%
C 7647 7223 218 218 2.85% 3.02%
D 7647 7222 1240 1240 16.22% 17.17%

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 11 3 794776 4067.2 790 770 195.2
A 7 190 154072 785.27 790 770 195.2
A 0 8 82736 419.86 790 770 195.2
B 2 249 487829 2832.81 789 759 171.9
B 10 247 109547 632.71 789 759 171.9
B 1 207 22341 125.52 789 759 171.9
C 6 223 705985 3321.02 765 758 212.4
C 9 38 355915 1672.49 765 758 212.4
C 13 3 244138 1146.11 765 758 212.4
D 2 62 3819770 18703.37 717 685 204.2
D 6 239 1073132 5252.14 717 685 204.2
D 15 94 460656 2252.64 717 685 204.2

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