ASTROSAT CZTI

Data Quality Report

Orbit 23250

Creation date: 2024-06-27T18:51:51.147808
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/AS1A08_004T03_9000003438_23250cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23250cztM0_level2_quad_clean.evt
Size (bytes)545,941,44087,298,560
Size520.7 MB 83.3 MB
Events in quadrant A3,406,821544,700
Events in quadrant B3,506,671553,370
Events in quadrant C3,518,942527,957
Events in quadrant D5,606,148509,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149112
B0150632
C0150512
D0216502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7303130.178009%
B7303290.397097%
C7303550.753115%
D73022253.081348%

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 7813 7304 0 0 0.00% 0.00%
B 7813 7304 2 2 0.03% 0.03%
C 7813 7304 2 2 0.03% 0.03%
D 7812 7303 248 248 3.17% 3.40%

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 13 254 11314 58.7 880 861 178.1
A 8 255 8652 43.75 880 861 178.1
A 3 137 7814 39.05 880 861 178.1
B 12 111 20628 115.24 881 859 171.6
B 4 173 19920 111.11 881 859 171.6
B 0 190 19897 110.98 881 859 171.6
C 14 238 132739 655.99 849 855 201.0
C 0 239 24289 116.56 849 855 201.0
C 8 208 19450 92.49 849 855 201.0
D 1 52 2191556 10505.21 854 831 208.5
D 2 152 79372 376.63 854 831 208.5
D 1 239 44167 207.81 854 831 208.5

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