ASTROSAT CZTI

Data Quality Report

Orbit 25336

Creation date: 2024-06-27T19:16:31.348042
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/AS1A09_059T01_9000003706_25336cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25336cztM0_level2_quad_clean.evt
Size (bytes)618,001,920119,116,800
Size589.4 MB 113.6 MB
Events in quadrant A3,750,282791,647
Events in quadrant B3,818,357792,437
Events in quadrant C3,910,076759,932
Events in quadrant D6,703,013714,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165030
B0166060
C0168810
D0253610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7894620.785407%
B7894851.076767%
C78941491.887510%
D78956187.827739%

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 8399 7896 0 0 0.00% 0.00%
B 8399 7896 0 0 0.00% 0.00%
C 8399 7896 0 0 0.00% 0.00%
D 8400 7897 327 327 3.89% 4.14%

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 13 254 11907 55.61 971 951 197.0
A 3 137 9076 41.24 971 951 197.0
A 0 226 8251 37.06 971 951 197.0
B 12 111 22795 117.24 965 938 186.4
B 11 111 20065 102.6 965 938 186.4
B 3 112 19363 98.83 965 938 186.4
C 14 238 147932 671.45 937 945 218.9
C 9 54 81585 368.37 937 945 218.9
C 2 16 21182 92.44 937 945 218.9
D 8 195 994279 4427.44 919 890 224.4
D 12 235 860479 3831.1 919 890 224.4
D 12 233 799497 3559.31 919 890 224.4

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