ASTROSAT CZTI

Data Quality Report

Orbit 12188

Creation date: 2024-06-27T16:23:34.499592
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/AS1A04_160T01_9000001798_12188cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12188cztM0_level2_quad_clean.evt
Size (bytes)526,921,920124,096,320
Size502.5 MB 118.3 MB
Events in quadrant A3,218,200871,598
Events in quadrant B5,538,307795,055
Events in quadrant C3,213,171849,221
Events in quadrant D3,569,458811,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135703
B0206822
C0136762
D0148022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168871.410506%
B616895915.547990%
C61681201.945525%
D61681722.788586%

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 7459 6171 1 1 0.01% 0.02%
B 7459 6171 572 572 7.67% 9.27%
C 7459 6171 58 58 0.78% 0.94%
D 7459 6171 99 99 1.33% 1.60%

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 1 162 68854 439.33 772 759 155.0
A 1 178 33909 213.88 772 759 155.0
A 1 161 29837 187.6 772 759 155.0
B 4 239 2157898 16592.67 702 687 130.0
B 11 51 201057 1541.19 702 687 130.0
B 10 16 175245 1342.65 702 687 130.0
C 15 208 321046 1945.83 728 731 164.6
C 0 207 37241 221.79 728 731 164.6
C 4 175 9354 52.38 728 731 164.6
D 1 52 263397 1512.08 732 710 173.7
D 10 157 115651 661.62 732 710 173.7
D 10 253 72920 415.66 732 710 173.7

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