ASTROSAT CZTI

Data Quality Report

Orbit 27337

Creation date: 2024-06-27T19:39:01.364062
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_255T01_9000003922_27337cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27337cztM0_level2_quad_clean.evt
Size (bytes)1,444,046,400212,135,040
Size1.3 GB 202.3 MB
Events in quadrant A8,901,9291,337,731
Events in quadrant B10,289,7431,311,449
Events in quadrant C10,422,4081,269,864
Events in quadrant D12,883,8001,244,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379490
B0415670
C0426090
D0503850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182901410.770913%
B182905803.171132%
C182905222.854019%
D1828914958.174312%

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 20310 18293 26 26 0.13% 0.14%
B 20310 18293 378 378 1.86% 2.07%
C 20310 18293 265 265 1.30% 1.45%
D 20309 18292 1343 1343 6.61% 7.34%

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 142218 310.83 2240 2194 450.5
A 13 248 63158 135.33 2240 2194 450.5
A 14 235 30215 62.2 2240 2194 450.5
B 5 172 1080971 2578.47 2201 2149 418.4
B 7 205 246104 583.07 2201 2149 418.4
B 3 64 192170 454.17 2201 2149 418.4
C 8 208 1250073 2502.12 2118 2129 498.8
C 2 16 379335 756.3 2118 2129 498.8
C 14 238 334004 665.41 2118 2129 498.8
D 1 52 3829284 7449.65 2069 2020 513.8
D 2 250 381190 738.04 2069 2020 513.8
D 12 233 330843 640.04 2069 2020 513.8

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