ASTROSAT CZTI

Data Quality Report

Orbit 06615

Creation date: 2024-06-27T15:09:24.427519
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/AS1G06_134T03_9000000894_06615cztM0_level2.evt modeM0/AS1G06_134T03_9000000894_06615cztM0_level2_quad_clean.evt
Size (bytes)1,245,908,160194,558,400
Size1.2 GB 185.5 MB
Events in quadrant A8,385,7651,225,281
Events in quadrant B7,777,6421,262,990
Events in quadrant C6,778,1381,244,622
Events in quadrant D13,779,8001,124,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349393
B0330243
C0305233
D0513273

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149961360.906909%
B149961681.120299%
C14996260.173380%
D149968255.501467%

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 18806 14999 56 56 0.30% 0.37%
B 18806 14999 65 65 0.35% 0.43%
C 18806 14999 3 3 0.02% 0.02%
D 18806 14999 828 828 4.40% 5.52%

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 8 15 1381378 3938.71 1744 1709 350.3
A 13 248 163890 463.0 1744 1709 350.3
A 14 111 67292 187.23 1744 1709 350.3
B 0 219 339582 1024.6 1776 1734 329.7
B 4 81 126253 377.63 1776 1734 329.7
B 0 214 124642 372.74 1776 1734 329.7
C 8 128 22101 51.96 1715 1728 392.1
C 7 255 19155 44.44 1715 1728 392.1
C 9 54 17973 41.43 1715 1728 392.1
D 8 195 4734052 11663.75 1667 1613 405.7
D 12 221 823781 2026.35 1667 1613 405.7
D 2 136 540330 1327.74 1667 1613 405.7

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