ASTROSAT CZTI

Data Quality Report

Orbit 31734

Creation date: 2024-06-27T20:32:05.126052
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/AS1T04_034T01_9000004632_31734cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31734cztM0_level2_quad_clean.evt
Size (bytes)758,116,800112,927,680
Size723.0 MB 107.7 MB
Events in quadrant A6,058,327710,218
Events in quadrant B6,465,388736,119
Events in quadrant C4,721,843714,855
Events in quadrant D5,176,051704,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232761
B0252601
C0191661
D0205392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79656538.198368%
B79654645.825487%
C79663664.594527%
D79651551.946014%

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 8385 7966 311 311 3.71% 3.90%
B 8385 7966 3 3 0.04% 0.04%
C 8386 7967 33 33 0.39% 0.41%
D 8385 7966 82 82 0.98% 1.03%

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 13 2234102 11053.49 990 970 202.0
A 13 254 14583 67.38 990 970 202.0
A 3 137 10533 47.33 990 970 202.0
B 6 159 2163020 10956.49 1003 976 197.3
B 4 80 326702 1650.67 1003 976 197.3
B 12 111 24934 121.41 1003 976 197.3
C 0 10 716310 3096.99 970 977 231.0
C 14 238 155030 666.96 970 977 231.0
C 10 22 25253 105.1 970 977 231.0
D 8 195 975354 4107.47 985 959 237.2
D 12 233 427834 1799.45 985 959 237.2
D 2 250 43781 180.51 985 959 237.2

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