ASTROSAT CZTI

Data Quality Report

Orbit 26504

Creation date: 2024-06-27T19:29:51.194561
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/AS1C05_017T01_9000003836_26504cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26504cztM0_level2_quad_clean.evt
Size (bytes)534,456,00079,133,760
Size509.7 MB 75.5 MB
Events in quadrant A3,650,561498,619
Events in quadrant B3,816,728501,237
Events in quadrant C4,048,417482,285
Events in quadrant D4,247,598478,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148290
B0153990
C0162970
D0168180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244991.585522%
B62441171.873799%
C62431933.091462%
D62431592.546852%

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 7629 6244 1 1 0.01% 0.02%
B 7629 6244 12 12 0.16% 0.19%
C 7628 6243 8 8 0.10% 0.13%
D 7628 6243 55 55 0.72% 0.88%

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 33780 177.72 938 926 184.9
A 13 254 10737 53.07 938 926 184.9
A 0 226 8220 39.46 938 926 184.9
B 0 190 94297 547.09 926 909 170.7
B 5 172 55551 320.11 926 909 170.7
B 3 112 20423 114.32 926 909 170.7
C 3 233 344268 1661.53 902 914 206.6
C 14 238 147293 708.35 902 914 206.6
C 2 16 33884 159.55 902 914 206.6
D 1 52 523183 2411.15 916 899 216.6
D 12 233 181170 832.23 916 899 216.6
D 2 234 25789 114.91 916 899 216.6

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