ASTROSAT CZTI

Data Quality Report

Orbit 53894

Creation date: 2025-09-14T11:00:12.338825
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_057T04_9000006508_53894cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53894cztM0_level2_quad_clean.evt
Size (bytes)822,988,80080,337,600
Size784.9 MB 76.6 MB
Events in quadrant A4,321,239632,902
Events in quadrant B3,716,771694,028
Events in quadrant C5,783,246598,535
Events in quadrant D16,110,00228,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177492
B0156252
C0218632
D0525648

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68594596.691938%
B68591792.609710%
C68595508.018662%
D6858661396.427530%

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 7639 6860 256 256 3.35% 3.73%
B 7639 6860 29 29 0.38% 0.42%
C 7639 6860 415 415 5.43% 6.05%
D 7637 6858 5308 5308 69.50% 77.40%

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 4 249 1104987 6134.56 745 726 180.0
A 15 174 163921 906.6 745 726 180.0
A 12 115 62507 343.21 745 726 180.0
B 5 172 184220 1133.55 753 726 161.9
B 7 0 179342 1103.42 753 726 161.9
B 5 250 126530 777.17 753 726 161.9
C 15 224 2431375 12231.54 721 715 198.7
C 12 252 154934 776.06 721 715 198.7
C 15 209 146693 734.59 721 715 198.7
D 8 176 14888398 275218.89 182 174 54.1
D 6 239 102283 1887.55 182 174 54.1
D 7 70 75874 1399.37 182 174 54.1

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