ASTROSAT CZTI

Data Quality Report

Orbit 36892

Creation date: 2024-06-27T21:32:54.693852
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/AS1C07_010T01_9000005246_36892cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36892cztM0_level2_quad_clean.evt
Size (bytes)134,680,32016,251,840
Size128.4 MB 15.5 MB
Events in quadrant A1,090,618115,788
Events in quadrant B322,1042,064
Events in quadrant C1,077,366112,729
Events in quadrant D1,443,149110,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044952
B021291
C043741
D056671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2078120.577478%
B20782078100.000000%
C2078120.577478%
D2078401.924928%

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 3602 2079 4 4 0.11% 0.19%
B 3601 2077 0 0 0.00% 0.00%
C 3602 2079 4 4 0.11% 0.19%
D 3602 2079 35 35 0.97% 1.68%

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 108396 2085.39 247 242 51.9
A 9 143 14933 283.27 247 242 51.9
A 13 6 9511 178.72 247 242 51.9
B 12 243 287094 122059.03 5 5 2.4
B 0 229 8748 3717.18 5 5 2.4
B 12 144 5287 2245.7 5 5 2.4
C 15 214 91008 1614.09 236 237 56.2
C 0 10 64015 1134.1 236 237 56.2
C 13 61 1611 24.43 236 237 56.2
D 12 235 358777 6090.88 238 232 58.9
D 5 32 75782 1283.43 238 232 58.9
D 7 223 34392 580.3 238 232 58.9

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