ASTROSAT CZTI

Data Quality Report

Orbit 18848

Creation date: 2024-06-27T17:55:38.406153
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_094T01_9000002816_18848cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18848cztM0_level2_quad_clean.evt
Size (bytes)454,921,92079,407,360
Size433.8 MB 75.7 MB
Events in quadrant A3,236,774496,492
Events in quadrant B3,377,154504,998
Events in quadrant C3,292,942479,609
Events in quadrant D3,429,861471,277

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133381
B0137251
C0135081
D0142991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64801101.697531%
B64811161.789847%
C64811492.299028%
D64801161.790123%

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 7335 6481 0 0 0.00% 0.00%
B 7336 6482 4 4 0.05% 0.06%
C 7336 6482 9 9 0.12% 0.14%
D 7335 6481 24 24 0.33% 0.37%

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 0 254 12379 68.58 833 815 168.6
A 11 29 10258 56.0 833 815 168.6
A 13 254 9810 53.34 833 815 168.6
B 7 220 35344 219.13 825 806 157.6
B 0 229 26037 160.08 825 806 157.6
B 6 36 25259 155.15 825 806 157.6
C 14 238 124001 666.21 788 793 184.9
C 0 207 47487 252.48 788 793 184.9
C 3 233 42381 224.87 788 793 184.9
D 1 20 118378 600.07 804 781 196.0
D 1 52 76216 384.93 804 781 196.0
D 12 1 72834 367.67 804 781 196.0

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