ASTROSAT CZTI

Data Quality Report

Orbit 01134

Creation date: 2024-06-27T14:08:03.063022
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/AS1P01_997T03_9000000216_01134cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01134cztM0_level2_quad_clean.evt
Size (bytes)1,131,825,600105,747,840
Size1.1 GB 100.8 MB
Events in quadrant A8,425,399692,287
Events in quadrant B8,771,885691,413
Events in quadrant C8,618,487665,311
Events in quadrant D7,990,465658,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301043
B0310632
C0306062
D0288472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7109150.211000%
B7109140.196933%
C7109130.182867%
D7109670.942467%

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 7264 7110 244 244 3.36% 3.43%
B 7264 7111 295 295 4.06% 4.15%
C 7264 7111 265 265 3.65% 3.73%
D 7264 7110 268 268 3.69% 3.77%

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 0 175 12668 19.75 2191 2202 530.0
A 11 79 9082 12.98 2191 2202 530.0
A 13 9 7776 10.52 2191 2202 530.0
B 8 4 31390 54.21 2278 2286 536.9
B 15 22 27375 46.73 2278 2286 536.9
B 12 52 22890 38.38 2278 2286 536.9
C 15 241 330314 562.21 2101 2181 583.6
C 3 111 28869 45.73 2101 2181 583.6
C 3 79 27350 43.12 2101 2181 583.6
D 10 85 158447 246.8 2039 2111 633.5
D 13 252 139484 216.86 2039 2111 633.5
D 12 22 43975 66.09 2039 2111 633.5

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