ASTROSAT CZTI

Data Quality Report

Orbit 28331

Creation date: 2024-06-27T19:50:35.293870
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_116T01_9000004082_28331cztM0_level2.evt modeM0/AS1A10_116T01_9000004082_28331cztM0_level2_quad_clean.evt
Size (bytes)611,228,16083,200,320
Size582.9 MB 79.3 MB
Events in quadrant A3,590,622513,113
Events in quadrant B4,225,429518,700
Events in quadrant C4,797,317490,992
Events in quadrant D5,391,053475,775

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155690
B0172450
C0193040
D0209730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74781461.952394%
B74782813.757689%
C74782723.637336%
D74783514.693768%

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 7753 7480 0 0 0.00% 0.00%
B 7753 7480 65 65 0.84% 0.87%
C 7753 7480 2 2 0.03% 0.03%
D 7753 7480 192 192 2.48% 2.57%

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 11719 57.42 931 910 188.2
A 3 137 9307 44.61 931 910 188.2
A 0 226 7832 36.77 931 910 188.2
B 10 245 428423 2378.94 923 899 179.7
B 10 246 131764 728.19 923 899 179.7
B 0 183 24252 129.95 923 899 179.7
C 3 233 1165168 5449.34 896 901 213.7
C 14 238 141134 656.36 896 901 213.7
C 13 61 6037 24.04 896 901 213.7
D 1 52 1388412 6441.21 895 870 215.4
D 8 195 421949 1954.72 895 870 215.4
D 2 250 118049 543.97 895 870 215.4

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