ASTROSAT CZTI

Data Quality Report

Orbit 41048

Creation date: 2024-06-27T22:23:40.877415
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_029T02_9000005590_41048cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41048cztM0_level2_quad_clean.evt
Size (bytes)919,618,560258,955,200
Size877.0 MB 247.0 MB
Events in quadrant A8,265,1841,717,150
Events in quadrant B7,240,4571,769,912
Events in quadrant C8,190,3961,699,139
Events in quadrant D9,089,9961,537,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344985
B0332024
C0347234
D0387054

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16193250.154388%
B16193460.284073%
C161931400.864571%
D161933522.173779%

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 21655 16197 6 6 0.03% 0.04%
B 21655 16197 8 8 0.04% 0.05%
C 21655 16197 105 105 0.48% 0.65%
D 21655 16197 256 256 1.18% 1.58%

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 1327301 3643.74 1780 1742 363.8
A 12 189 30158 78.11 1780 1742 363.8
A 13 254 24512 62.59 1780 1742 363.8
B 8 128 201806 587.86 1765 1715 340.4
B 0 190 72941 209.26 1765 1715 340.4
B 12 111 44818 126.64 1765 1715 340.4
C 15 214 733667 1812.61 1733 1740 403.8
C 14 254 563382 1390.9 1733 1740 403.8
C 0 10 120290 293.59 1733 1740 403.8
D 13 249 1292499 3097.02 1717 1669 416.8
D 12 0 507130 1212.73 1717 1669 416.8
D 13 171 336240 802.72 1717 1669 416.8

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