ASTROSAT CZTI

Data Quality Report

Orbit 46740

Creation date: 2024-06-27T23:27:04.446350
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/AS1T05_205T01_9000006260_46740cztM0_level2.fits modeM0/AS1T05_205T01_9000006260_46740cztM0_level2_quad_clean.evt
Size (bytes)650,128,320139,236,480
Size620.0 MB 132.8 MB
Events in quadrant A8,303,434916,224
Events in quadrant B4,819,901948,876
Events in quadrant C4,067,572922,907
Events in quadrant D6,186,328810,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306301
B0201861
C0187671
D0247338

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88892232.508719%
B88901631.833521%
C8890360.404949%
D88894875.478682%

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 8969 8891 25 25 0.28% 0.28%
B 8970 8892 26 26 0.29% 0.29%
C 8970 8892 11 11 0.12% 0.12%
D 8968 8890 461 461 5.14% 5.19%

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 10 83 3793831 18152.02 994 972 208.9
A 15 235 500431 2390.33 994 972 208.9
A 9 191 78259 369.88 994 972 208.9
B 3 112 617840 3059.89 998 964 201.6
B 4 171 73320 358.91 998 964 201.6
B 15 201 53101 258.62 998 964 201.6
C 3 233 115109 489.34 987 990 233.2
C 12 2 90145 382.29 987 990 233.2
C 14 254 12627 49.9 987 990 233.2
D 13 249 1893413 7839.2 959 928 241.4
D 13 138 248846 1026.95 959 928 241.4
D 1 52 176156 725.84 959 928 241.4

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