ASTROSAT CZTI

Data Quality Report

Orbit 23071

Creation date: 2024-06-27T18:49:22.359019
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_049T01_9000003408_23071cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23071cztM0_level2_quad_clean.evt
Size (bytes)496,981,44089,835,840
Size474.0 MB 85.7 MB
Events in quadrant A3,259,387573,468
Events in quadrant B3,430,537594,383
Events in quadrant C3,523,883566,954
Events in quadrant D4,401,363537,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136842
B0141102
C0144282
D0173912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424210.326899%
B6424570.887298%
C64241181.836862%
D64243094.810087%

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 7754 6425 1 1 0.01% 0.02%
B 7754 6425 17 17 0.22% 0.26%
C 7754 6425 17 17 0.22% 0.26%
D 7754 6425 226 226 2.91% 3.52%

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 6 16 11005 60.56 842 826 168.1
A 13 254 9931 54.17 842 826 168.1
A 0 226 7428 39.28 842 826 168.1
B 4 216 55714 350.8 845 825 156.5
B 0 189 20684 126.92 845 825 156.5
B 12 111 18561 113.35 845 825 156.5
C 14 238 130764 678.94 825 834 191.4
C 0 10 120960 627.71 825 834 191.4
C 0 207 44504 228.19 825 834 191.4
D 1 52 787772 4000.68 819 797 196.7
D 1 239 228721 1158.68 819 797 196.7
D 12 227 187308 948.15 819 797 196.7

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