ASTROSAT CZTI

Data Quality Report

Orbit 52647

Creation date: 2025-06-23T16:10:20.250548
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_011T07_9000006480_52647cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52647cztM0_level2_quad_clean.evt
Size (bytes)571,314,24098,677,440
Size544.8 MB 94.1 MB
Events in quadrant A3,826,012659,609
Events in quadrant B4,747,733677,710
Events in quadrant C7,071,584567,758
Events in quadrant D4,947,799584,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164080
B0191940
C0258460
D0197650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7158751.047779%
B71593805.308004%
C715988112.306188%
D71592283.184802%

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 7158 7158 73 73 1.02% 1.02%
B 7159 7159 241 241 3.37% 3.37%
C 7159 7159 891 891 12.45% 12.45%
D 7159 7159 228 228 3.18% 3.18%

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 7 206 311797 1707.96 721 703 182.1
A 3 14 209547 1146.59 721 703 182.1
A 14 239 146200 798.81 721 703 182.1
B 5 185 700483 4658.47 708 684 150.2
B 4 173 404525 2688.32 708 684 150.2
B 12 32 297829 1978.06 708 684 150.2
C 15 248 1769470 9535.23 671 665 185.5
C 1 3 977555 5266.19 671 665 185.5
C 13 3 919200 4951.61 671 665 185.5
D 8 176 567174 2886.06 691 661 196.3
D 2 153 517760 2634.32 691 661 196.3
D 12 2 274204 1393.54 691 661 196.3

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