ASTROSAT CZTI

Data Quality Report

Orbit 43121

Creation date: 2024-06-27T22:48:17.334023
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/AS1T05_154T01_9000005850_43121cztM0_level2.fits modeM0/AS1T05_154T01_9000005850_43121cztM0_level2_quad_clean.evt
Size (bytes)384,454,08094,357,440
Size366.6 MB 90.0 MB
Events in quadrant A3,784,891623,742
Events in quadrant B2,722,167637,186
Events in quadrant C2,830,611619,638
Events in quadrant D4,433,444562,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151972
B0124822
C0125512
D0173322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5915771.301775%
B5915400.676247%
C5916230.388776%
D59162133.600406%

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 8962 5917 44 44 0.49% 0.74%
B 8962 5917 19 19 0.21% 0.32%
C 8963 5918 17 17 0.19% 0.29%
D 8963 5918 177 177 1.97% 2.99%

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 10 83 629894 4935.75 616 602 127.5
A 15 222 403084 3156.81 616 602 127.5
A 15 237 187291 1464.27 616 602 127.5
B 0 189 176392 1469.15 614 596 119.7
B 0 229 45979 379.27 614 596 119.7
B 3 112 38660 318.11 614 596 119.7
C 15 214 250328 1761.75 603 606 141.7
C 3 233 135960 954.9 603 606 141.7
C 14 254 75497 528.34 603 606 141.7
D 1 52 1707537 11810.6 594 575 144.5
D 13 171 275606 1902.96 594 575 144.5
D 13 249 35187 239.48 594 575 144.5

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