ASTROSAT CZTI

Data Quality Report

Orbit 17052

Creation date: 2024-06-27T17:31:23.660307
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/AS1T03_004T01_9000002532_17052cztM0_level2.evt modeM0/AS1T03_004T01_9000002532_17052cztM0_level2_quad_clean.evt
Size (bytes)591,318,72064,264,320
Size563.9 MB 61.3 MB
Events in quadrant A3,407,027383,737
Events in quadrant B3,499,841394,629
Events in quadrant C6,920,567357,501
Events in quadrant D3,649,303364,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138792
B0142162
C0251352
D0149662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6380801.253918%
B63801001.567398%
C63804156.504702%
D6380570.893417%

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 7661 6383 9 9 0.12% 0.14%
B 7661 6383 9 9 0.12% 0.14%
C 7661 6383 5 5 0.07% 0.08%
D 7661 6383 21 21 0.27% 0.33%

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 4 2 127495 756.53 837 823 167.4
A 3 254 37318 217.96 837 823 167.4
A 12 189 16261 92.2 837 823 167.4
B 6 36 99790 626.39 842 825 158.0
B 3 64 67374 421.22 842 825 158.0
B 3 209 19185 116.21 842 825 158.0
C 3 233 3732367 20450.24 784 790 182.5
C 14 238 122456 666.77 784 790 182.5
C 9 160 6093 29.06 784 790 182.5
D 5 222 516376 2638.88 803 783 195.4
D 10 70 40290 202.2 803 783 195.4
D 2 234 23484 116.19 803 783 195.4

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