ASTROSAT CZTI

Data Quality Report

Orbit 27638

Creation date: 2024-06-27T19:42:28.271052
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_257T01_9000003976_27638cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27638cztM0_level2_quad_clean.evt
Size (bytes)546,416,64088,297,920
Size521.1 MB 84.2 MB
Events in quadrant A3,487,366551,404
Events in quadrant B3,639,940559,529
Events in quadrant C3,570,013535,297
Events in quadrant D5,352,757516,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151360
B0153950
C0153460
D0208530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73341782.427052%
B73352132.903885%
C73352343.190184%
D73354496.121336%

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 7480 7335 2 2 0.03% 0.03%
B 7481 7336 6 6 0.08% 0.08%
C 7480 7335 11 11 0.15% 0.15%
D 7481 7336 301 301 4.02% 4.10%

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 6 16 20719 109.67 890 869 181.0
A 15 174 18145 95.45 890 869 181.0
A 11 84 12969 66.85 890 869 181.0
B 10 245 67520 388.6 884 860 171.5
B 0 190 31217 176.97 884 860 171.5
B 12 111 21540 120.56 884 860 171.5
C 14 238 136074 669.5 853 857 202.0
C 2 16 97032 476.19 853 857 202.0
C 3 233 8458 37.63 853 857 202.0
D 1 52 1371684 6667.54 851 829 205.6
D 7 80 581241 2823.0 851 829 205.6
D 2 250 102123 492.67 851 829 205.6

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