ASTROSAT CZTI

Data Quality Report

Orbit 39798

Creation date: 2024-06-27T22:09:05.883087
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/AS1A12_022T01_9000005498_39798cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39798cztM0_level2_quad_clean.evt
Size (bytes)889,220,160138,018,240
Size848.0 MB 131.6 MB
Events in quadrant A5,286,2791,026,541
Events in quadrant B4,930,6671,036,960
Events in quadrant C16,295,242595,864
Events in quadrant D5,716,370902,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021766503
B020966390
C055483924
D023392402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0533
B0532
C0565
D0532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01842
B01853
C01842
D01842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88811461.643959%
B88831751.970055%
C8879422447.572925%
D88852973.342712%

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 18550 8894 97 97 0.52% 1.09%
B 18551 8895 122 122 0.66% 1.37%
C 18551 8894 3887 3887 20.95% 43.70%
D 18551 8900 277 277 1.49% 3.11%

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 10 83 770732 3830.3 984 965 201.0
A 9 143 467329 2320.59 984 965 201.0
A 13 248 201486 997.78 984 965 201.0
B 4 171 418142 2232.26 979 951 186.9
B 5 255 215629 1148.67 979 951 186.9
B 4 170 204011 1086.51 979 951 186.9
C 9 187 10259779 54841.5 805 810 187.1
C 15 208 2421243 12938.94 805 810 187.1
C 15 214 313726 1672.76 805 810 187.1
D 12 227 1064532 4532.13 958 930 234.7
D 13 249 270630 1149.22 958 930 234.7
D 12 233 233557 991.25 958 930 234.7

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