ASTROSAT CZTI

Data Quality Report

Orbit 39635

Creation date: 2024-06-27T22:07:07.229360
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_018T01_9000005488_39635cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39635cztM0_level2_quad_clean.evt
Size (bytes)518,722,56089,893,440
Size494.7 MB 85.7 MB
Events in quadrant A4,544,241587,217
Events in quadrant B3,645,778657,057
Events in quadrant C6,708,612565,099
Events in quadrant D3,915,371562,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166723
B0140252
C0234962
D0151292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499959211.842368%
B49991492.980596%
C499984816.963393%
D50003557.100000%

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 7091 5000 526 526 7.42% 10.52%
B 7091 5000 63 63 0.89% 1.26%
C 7091 5000 787 787 11.10% 15.74%
D 7092 5001 300 300 4.23% 6.00%

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 15 222 1865255 16326.54 571 560 114.2
A 10 83 418769 3661.67 571 560 114.2
A 9 143 33484 288.27 571 560 114.2
B 5 172 1283066 11751.42 581 566 109.1
B 5 255 66202 601.42 581 566 109.1
B 12 111 12568 109.97 581 566 109.1
C 15 208 3653115 28909.4 551 555 126.3
C 9 187 649627 5137.3 551 555 126.3
C 15 214 199266 1572.76 551 555 126.3
D 13 249 1348188 9840.56 570 556 136.9
D 1 52 255755 1863.49 570 556 136.9
D 2 234 26420 188.86 570 556 136.9

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