ASTROSAT CZTI

Data Quality Report

Orbit 25036

Creation date: 2024-06-27T19:13:03.482367
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/AS1T03_206T01_9000003672_25036cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25036cztM0_level2_quad_clean.evt
Size (bytes)2,061,702,720300,029,760
Size1.9 GB 286.1 MB
Events in quadrant A11,382,1471,926,066
Events in quadrant B11,846,3181,942,238
Events in quadrant C11,835,0601,860,475
Events in quadrant D25,762,7531,710,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494964
B0504874
C0499894
D0931144

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239502280.951983%
B239503111.298539%
C239493581.494843%
D2394923949.996242%

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 26620 23954 2 2 0.01% 0.01%
B 26620 23952 25 25 0.09% 0.10%
C 26619 23953 9 9 0.03% 0.04%
D 26619 23951 1700 1700 6.39% 7.10%

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 11 208 92388 152.43 2902 2834 587.5
A 4 2 68212 111.28 2902 2834 587.5
A 15 174 42567 67.63 2902 2834 587.5
B 0 245 159435 286.73 2884 2811 546.2
B 3 64 92108 163.47 2884 2811 546.2
B 15 33 88473 156.82 2884 2811 546.2
C 7 247 464599 702.83 2787 2802 657.1
C 14 238 440844 666.68 2787 2802 657.1
C 0 239 31325 43.41 2787 2802 657.1
D 7 238 6806240 10258.84 2734 2662 663.2
D 8 195 5387167 8119.08 2734 2662 663.2
D 1 52 2374008 3575.66 2734 2662 663.2

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