ASTROSAT CZTI

Data Quality Report

Orbit 57908

Creation date: 2026-06-11T13:11:30.530788
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_125T11_9000006582_57908cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57908cztM0_level2_quad_clean.evt
Size (bytes)512,228,160106,940,160
Size488.5 MB 102.0 MB
Events in quadrant A3,550,742714,213
Events in quadrant B3,725,821757,234
Events in quadrant C7,388,800592,966
Events in quadrant D3,701,803641,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164950
B0167940
C0272730
D0167670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7638831.086672%
B76382192.867243%
C7638120115.724012%
D7639921.204346%

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 7638 7638 17 17 0.22% 0.22%
B 7638 7638 43 43 0.56% 0.56%
C 7638 7638 1019 1019 13.34% 13.34%
D 7639 7639 65 65 0.85% 0.85%

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 8 9 315077 1551.93 818 796 202.5
A 10 251 26378 126.32 818 796 202.5
A 7 64 21441 101.95 818 796 202.5
B 3 238 342076 1986.36 806 774 171.8
B 7 252 45178 258.43 806 774 171.8
B 4 201 27137 153.43 806 774 171.8
C 15 224 3938736 19661.61 746 738 200.3
C 15 208 228841 1138.87 746 738 200.3
C 6 223 129904 644.9 746 738 200.3
D 2 31 211349 939.15 796 758 224.2
D 3 12 111230 492.66 796 758 224.2
D 12 248 108072 478.58 796 758 224.2

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