ASTROSAT CZTI

Data Quality Report

Orbit 52899

Creation date: 2025-07-16T18:06:18.420708
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/AS1C09_011T06_9000006484_52899cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52899cztM0_level2_quad_clean.evt
Size (bytes)913,752,00062,988,480
Size871.4 MB 60.1 MB
Events in quadrant A15,024,230181,796
Events in quadrant B4,969,542663,708
Events in quadrant C6,514,91530,135
Events in quadrant D6,769,162542,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493112
B0198304
C0243802
D0251662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7007528375.396033%
B70064746.765629%
C7006671095.775050%
D700698614.073651%

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 7831 7006 5161 5161 65.90% 73.67%
B 7831 7006 336 336 4.29% 4.80%
C 7830 7005 1007 1007 12.86% 14.38%
D 7831 7007 992 992 12.67% 14.16%

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 9 191 12434874 121111.56 400 390 102.7
A 7 250 358832 3491.22 400 390 102.7
A 0 8 182231 1771.13 400 390 102.7
B 10 254 584526 3892.12 706 681 150.0
B 5 172 418720 2786.8 706 681 150.0
B 1 255 316069 2102.49 706 681 150.0
C 15 198 5861363 316710.2 61 61 18.5
C 7 80 179144 9676.59 61 61 18.5
C 2 12 67414 3639.36 61 61 18.5
D 8 176 2817943 14529.93 673 644 193.9
D 15 94 349806 1800.77 673 644 193.9
D 7 96 277723 1429.01 673 644 193.9

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