ASTROSAT CZTI

Data Quality Report

Orbit 53923

Creation date: 2025-09-17T10:29:39.941616
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_057T04_9000006508_53923cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53923cztM0_level2_quad_clean.evt
Size (bytes)642,015,36094,674,240
Size612.3 MB 90.3 MB
Events in quadrant A3,617,366665,817
Events in quadrant B4,027,766696,243
Events in quadrant C4,543,921626,824
Events in quadrant D11,029,827387,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158252
B0170054
C0185132
D0376422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70361752.487209%
B70353535.017768%
C70353545.031983%
D7035287040.796020%

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 7861 7036 91 91 1.16% 1.29%
B 7859 7034 159 159 2.02% 2.26%
C 7860 7035 325 325 4.13% 4.62%
D 7860 7036 2650 2650 33.72% 37.66%

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 8 311004 1627.31 775 757 190.7
A 15 174 117293 611.26 775 757 190.7
A 4 207 45688 235.67 775 757 190.7
B 5 236 478932 2894.1 764 735 165.2
B 5 185 281555 1699.55 764 735 165.2
B 0 213 157414 948.24 764 735 165.2
C 1 241 966912 4699.46 745 736 205.6
C 13 3 224981 1090.72 745 736 205.6
C 12 2 134233 649.33 745 736 205.6
D 8 176 7036208 42624.75 569 543 165.1
D 2 165 1076195 6516.71 569 543 165.1
D 2 172 308522 1865.85 569 543 165.1

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