ASTROSAT CZTI

Data Quality Report

Orbit 19110

Creation date: 2024-06-27T17:59:09.673426
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_098T01_9000002836_19110cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19110cztM0_level2_quad_clean.evt
Size (bytes)620,579,520106,021,440
Size591.8 MB 101.1 MB
Events in quadrant A3,518,258687,021
Events in quadrant B4,443,317701,867
Events in quadrant C3,655,760684,144
Events in quadrant D6,662,994610,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157072
B0183282
C0158592
D0251792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7577961.266992%
B75773334.394879%
C75771151.517751%
D7577116815.415072%

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 7892 7578 0 0 0.00% 0.00%
B 7892 7578 146 146 1.85% 1.93%
C 7892 7578 1 1 0.01% 0.01%
D 7892 7578 796 796 10.09% 10.50%

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 8176 39.03 912 890 186.7
A 0 226 7915 37.63 912 890 186.7
A 3 137 7216 33.89 912 890 186.7
B 10 245 583877 3334.83 904 882 174.8
B 7 220 155084 882.06 904 882 174.8
B 6 36 67914 383.43 904 882 174.8
C 14 238 136127 652.34 879 886 207.3
C 3 233 61888 294.24 879 886 207.3
C 0 207 16895 77.22 879 886 207.3
D 1 52 3071822 15541.76 807 782 197.6
D 12 218 359503 1815.4 807 782 197.6
D 11 176 82945 415.81 807 782 197.6

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