ASTROSAT CZTI

Data Quality Report

Orbit 13481

Creation date: 2024-06-27T16:41:27.997890
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/AS1A04_103T01_9000001988_13481cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13481cztM0_level2_quad_clean.evt
Size (bytes)571,898,880107,199,360
Size545.4 MB 102.2 MB
Events in quadrant A3,826,498676,875
Events in quadrant B4,138,547690,968
Events in quadrant C3,865,039674,285
Events in quadrant D4,927,260628,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170413
B0178172
C0170432
D0207772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8281310.374351%
B82811031.243811%
C8281260.313972%
D82814185.047700%

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 8972 8284 1 1 0.01% 0.01%
B 8972 8284 23 23 0.26% 0.28%
C 8972 8284 1 1 0.01% 0.01%
D 8972 8283 301 301 3.35% 3.63%

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 1 162 15292 71.36 986 966 200.7
A 0 226 8840 39.22 986 966 200.7
A 12 194 7340 31.75 986 966 200.7
B 3 64 111997 581.39 989 963 191.0
B 0 214 70339 363.26 989 963 191.0
B 0 230 38617 197.16 989 963 191.0
C 3 233 91527 402.8 961 966 224.8
C 14 220 10325 41.63 961 966 224.8
C 0 207 7694 29.93 961 966 224.8
D 13 122 1140235 5040.98 933 908 226.0
D 13 104 82348 360.33 933 908 226.0
D 13 249 68683 299.87 933 908 226.0

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