ASTROSAT CZTI

Data Quality Report

Orbit 50760

Creation date: 2025-02-15T10:24:25.708379
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/AS1C07_001T01_9000006450_50760cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50760cztM0_level2_quad_clean.evt
Size (bytes)722,324,160107,455,680
Size688.9 MB 102.5 MB
Events in quadrant A5,202,887719,130
Events in quadrant B7,216,260732,921
Events in quadrant C6,888,069631,231
Events in quadrant D6,822,362622,960

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208570
B0269820
C0257650
D0257770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78651772.250477%
B786585210.832804%
C786494111.965921%
D78655106.484425%

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 7865 7865 138 138 1.75% 1.75%
B 7865 7865 569 569 7.23% 7.23%
C 7864 7864 537 537 6.83% 6.83%
D 7865 7865 445 445 5.66% 5.66%

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 4 4 620331 3072.01 815 796 201.7
A 14 254 390823 1933.97 815 796 201.7
A 4 3 120887 595.48 815 796 201.7
B 4 206 2634771 15427.11 796 767 170.7
B 7 0 646482 3781.89 796 767 170.7
B 10 247 203439 1187.03 796 767 170.7
C 4 210 1808581 8706.11 762 759 207.6
C 12 247 453883 2182.15 762 759 207.6
C 13 3 296607 1424.74 762 759 207.6
D 2 216 632526 2933.49 769 741 215.4
D 15 93 498276 2310.14 769 741 215.4
D 15 108 402044 1863.32 769 741 215.4

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