ASTROSAT CZTI

Data Quality Report

Orbit 41415

Creation date: 2024-06-27T22:28:44.043806
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/AS1A12_035T01_9000005666_41415cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41415cztM0_level2_quad_clean.evt
Size (bytes)356,264,64090,708,480
Size339.8 MB 86.5 MB
Events in quadrant A2,981,653628,090
Events in quadrant B2,558,919643,424
Events in quadrant C3,244,596577,990
Events in quadrant D4,002,324536,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119613
B0108822
C0125972
D0153452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141190.369578%
B5141390.758607%
C51412635.115736%
D51413266.341179%

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 7084 5142 4 4 0.06% 0.08%
B 7084 5142 26 26 0.37% 0.51%
C 7084 5142 254 254 3.59% 4.94%
D 7084 5142 274 274 3.87% 5.33%

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 10 83 500154 4037.17 602 591 123.7
A 2 79 120012 965.09 602 591 123.7
A 13 6 11176 85.54 602 591 123.7
B 0 190 110337 957.33 601 585 114.6
B 5 255 67198 581.04 601 585 114.6
B 12 111 14576 122.04 601 585 114.6
C 0 10 660391 4985.08 569 574 132.4
C 15 214 223430 1683.73 569 574 132.4
C 15 111 83162 623.97 569 574 132.4
D 1 47 923092 6582.74 577 560 140.1
D 2 249 327905 2335.77 577 560 140.1
D 5 222 261235 1860.05 577 560 140.1

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