ASTROSAT CZTI

Data Quality Report

Orbit 33808

Creation date: 2024-06-27T20:52:47.956925
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/AS1T04_077T01_9000004824_33808cztM0_level2.evt modeM0/AS1T04_077T01_9000004824_33808cztM0_level2_quad_clean.evt
Size (bytes)2,307,395,520203,762,880
Size2.1 GB 194.3 MB
Events in quadrant A16,285,6301,130,342
Events in quadrant B11,008,3001,342,116
Events in quadrant C10,533,2431,332,274
Events in quadrant D30,767,3801,045,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0609955
B0451364
C0431764
D01045846

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19140346018.077325%
B191404772.492163%
C191411310.684395%
D19140728138.040752%

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 25017 19145 2860 2860 11.43% 14.94%
B 25017 19145 280 280 1.12% 1.46%
C 25017 19146 102 102 0.41% 0.53%
D 25017 19145 6838 6838 27.33% 35.72%

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 15 169 7790985 19870.1 1980 1945 392.0
A 15 237 766034 1949.22 1980 1945 392.0
A 13 6 69424 172.14 1980 1945 392.0
B 5 172 627454 1473.92 2221 2158 424.2
B 5 255 583168 1369.53 2221 2158 424.2
B 0 190 230955 539.31 2221 2158 424.2
C 15 214 605868 1208.73 2179 2194 499.4
C 14 254 331127 658.62 2179 2194 499.4
C 3 233 305745 607.8 2179 2194 499.4
D 12 235 16288460 37014.62 1828 1779 440.0
D 8 195 4363187 9912.14 1828 1779 440.0
D 2 250 1697538 3853.94 1828 1779 440.0

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