ASTROSAT CZTI

Data Quality Report

Orbit 28182

Creation date: 2024-06-27T19:48:54.949585
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/AS1A10_073T05_9000004068_28182cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28182cztM0_level2_quad_clean.evt
Size (bytes)1,356,494,400226,488,960
Size1.3 GB 216.0 MB
Events in quadrant A7,548,6101,501,716
Events in quadrant B7,833,5101,516,836
Events in quadrant C9,245,8611,423,341
Events in quadrant D15,406,6021,347,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322640
B0330740
C0377090
D0563860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15515390.251370%
B155151030.663874%
C155157074.556880%
D15515220314.199162%

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 19261 15518 1 1 0.01% 0.01%
B 19261 15518 21 21 0.11% 0.14%
C 19261 15518 419 419 2.18% 2.70%
D 19261 15518 1996 1996 10.36% 12.86%

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 15 174 53374 135.11 1936 1903 381.0
A 5 98 27844 68.09 1936 1903 381.0
A 13 254 23305 56.18 1936 1903 381.0
B 10 245 172715 483.94 1915 1870 353.0
B 10 246 68747 189.44 1915 1870 353.0
B 12 111 43178 117.01 1915 1870 353.0
C 3 233 1862861 4529.53 1798 1811 410.9
C 14 238 296259 716.64 1798 1811 410.9
C 15 208 42486 99.0 1798 1811 410.9
D 1 52 6329647 15717.35 1728 1687 402.6
D 7 80 857817 2126.45 1728 1687 402.6
D 8 195 659887 1634.83 1728 1687 402.6

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