ASTROSAT CZTI

Data Quality Report

Orbit 15505

Creation date: 2024-06-27T17:09:35.411554
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/AS1T02_085T01_9000002296_15505cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15505cztM0_level2_quad_clean.evt
Size (bytes)1,727,582,400294,459,840
Size1.6 GB 280.8 MB
Events in quadrant A11,468,6021,888,458
Events in quadrant B12,173,8251,903,749
Events in quadrant C12,214,3261,813,692
Events in quadrant D14,961,3551,780,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480956
B0497135
C0499335
D0591445

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222454291.928523%
B222454472.009440%
C222454542.040908%
D2224510574.751630%

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 26421 22247 45 45 0.17% 0.20%
B 26421 22250 42 42 0.16% 0.19%
C 26421 22249 0 0 0.00% 0.00%
D 26421 22248 704 704 2.66% 3.16%

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 14 238 328202 578.46 2849 2782 562.6
A 14 237 56892 96.18 2849 2782 562.6
A 9 143 51127 85.94 2849 2782 562.6
B 4 142 391202 747.97 2825 2758 519.3
B 0 189 125258 235.88 2825 2758 519.3
B 4 216 108255 203.14 2825 2758 519.3
C 3 233 1189105 1922.06 2706 2724 617.2
C 14 238 423378 681.5 2706 2724 617.2
C 0 207 32531 48.29 2706 2724 617.2
D 1 52 3282644 4933.83 2739 2661 664.8
D 5 222 746479 1118.87 2739 2661 664.8
D 10 70 331291 494.33 2739 2661 664.8

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