ASTROSAT CZTI

Data Quality Report

Orbit 39420

Creation date: 2024-06-27T22:04:21.504494
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_077T06_9000005474_39420cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39420cztM0_level2_quad_clean.evt
Size (bytes)570,726,72067,374,720
Size544.3 MB 64.3 MB
Events in quadrant A4,059,148547,137
Events in quadrant B2,236,775572,570
Events in quadrant C4,112,071493,521
Events in quadrant D10,339,92785,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154302
B099931
C0154471
D0340251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48611442.962353%
B4861150.308578%
C48614779.812796%
D4861417085.784818%

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 6894 4862 103 103 1.49% 2.12%
B 6894 4862 4 4 0.06% 0.08%
C 6894 4861 401 401 5.82% 8.25%
D 6894 4861 2877 2877 41.73% 59.19%

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 1555186 14169.92 540 529 109.7
A 10 83 355513 3235.5 540 529 109.7
A 13 248 28947 259.02 540 529 109.7
B 4 170 68465 644.68 541 526 105.4
B 5 172 17755 163.49 541 526 105.4
B 5 255 13551 123.59 541 526 105.4
C 15 208 1779638 15229.35 503 506 116.8
C 15 214 193979 1656.13 503 506 116.8
C 9 187 160644 1370.78 503 506 116.8
D 12 0 4698122 86635.6 212 205 54.2
D 12 235 4444838 81964.72 212 205 54.2
D 12 227 281241 5182.66 212 205 54.2

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