ASTROSAT CZTI

Data Quality Report

Orbit 56685

Creation date: 2026-03-21T06:32:01.501521
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_083T06_9000006558_56685cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56685cztM0_level2_quad_clean.evt
Size (bytes)479,810,880108,541,440
Size457.6 MB 103.5 MB
Events in quadrant A4,305,020715,500
Events in quadrant B3,641,301777,483
Events in quadrant C5,165,470613,707
Events in quadrant D4,054,111648,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185512
B0163782
C0212812
D0178312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76462453.204290%
B76461481.935653%
C764786311.285471%
D76471501.961554%

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 8576 7649 166 166 1.94% 2.17%
B 8576 7649 9 9 0.10% 0.12%
C 8577 7649 557 557 6.49% 7.28%
D 8577 7650 86 86 1.00% 1.12%

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 26 885318 4365.37 818 799 202.6
A 3 62 67124 327.33 818 799 202.6
A 10 251 39233 189.68 818 799 202.6
B 4 21 165062 940.25 818 788 174.7
B 10 247 55359 312.35 818 788 174.7
B 8 128 35557 199.0 818 788 174.7
C 15 230 1462013 7242.9 734 726 201.8
C 15 215 361972 1790.52 734 726 201.8
C 6 223 189616 936.24 734 726 201.8
D 2 249 288953 1285.4 792 756 224.2
D 8 240 104286 461.76 792 756 224.2
D 6 239 79205 349.9 792 756 224.2

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