ASTROSAT CZTI

Data Quality Report

Orbit 20200603_A07_059T07_9000003704_level2

Creation date: 2025-12-11T08:30:01.570057
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/AS1A07_059T07_9000003704cztM0_level2.fits modeM0/AS1A07_059T07_9000003704cztM0_level2_quad_clean.evt
Size (bytes)203,175,36052,358,400
Size193.8 MB 49.9 MB
Events in quadrant A1,336,674109,587
Events in quadrant B1,251,260106,220
Events in quadrant C1,272,716101,483
Events in quadrant D1,112,60485,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387010
B0436040
C0388220
D0595680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171133101.811488%
B171134892.857477%
C171133832.238065%
D1711315168.858762%

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 22293 17110 0 0 0.00% 0.00%
B 22293 17108 0 0 0.00% 0.00%
C 22293 17112 0 0 0.00% 0.00%
D 22293 17110 0 0 0.00% 0.00%

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 29 1215 10.54 349 332 83.8
A 7 110 1024 8.26 349 332 83.8
A 9 19 985 7.8 349 332 83.8
B 2 9 945 9.47 330 319 66.1
B 5 128 846 7.97 330 319 66.1
B 2 8 797 7.23 330 319 66.1
C 1 81 966 7.54 336 318 86.0
C 1 80 939 7.22 336 318 86.0
C 9 209 871 6.43 336 318 86.0
D 10 189 817 6.34 317 293 82.7
D 6 67 766 5.72 317 293 82.7
D 6 38 765 5.71 317 293 82.7

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