ASTROSAT CZTI

Data Quality Report

Orbit 13509

Creation date: 2024-06-27T16:41:52.742269
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_103T01_9000001988_13509cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13509cztM0_level2_quad_clean.evt
Size (bytes)505,920,96084,072,960
Size482.5 MB 80.2 MB
Events in quadrant A3,338,547518,291
Events in quadrant B4,694,473521,991
Events in quadrant C3,545,593517,483
Events in quadrant D3,264,875497,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146912
B0187212
C0148932
D0147302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7033690.981089%
B70333705.260913%
C7033320.454998%
D7033200.284374%

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 7724 7036 0 0 0.00% 0.00%
B 7724 7035 174 174 2.25% 2.47%
C 7724 7036 0 0 0.00% 0.00%
D 7724 7036 2 2 0.03% 0.03%

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 8 15 29605 162.76 860 840 176.7
A 0 226 7761 39.16 860 840 176.7
A 12 194 6553 32.33 860 840 176.7
B 3 64 1222168 7453.73 853 833 163.9
B 4 142 69051 416.33 853 833 163.9
B 0 214 25826 152.53 853 833 163.9
C 3 233 271121 1387.43 836 842 194.8
C 10 223 7154 32.4 836 842 194.8
C 13 61 6048 26.72 836 842 194.8
D 8 195 34748 168.83 829 805 201.0
D 2 234 26210 126.36 829 805 201.0
D 14 35 24351 117.12 829 805 201.0

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