ASTROSAT CZTI

Data Quality Report

Orbit 47261

Creation date: 2024-06-27T23:33:58.524054
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/AS1C09_008T03_9000006306_47261cztM0_level2.fits modeM0/AS1C09_008T03_9000006306_47261cztM0_level2_quad_clean.evt
Size (bytes)1,695,179,520239,572,800
Size1.6 GB 228.5 MB
Events in quadrant A18,169,9641,701,885
Events in quadrant B8,331,4771,824,444
Events in quadrant C7,171,8801,749,925
Events in quadrant D27,790,005827,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065945600
B036816268
C034570239
D0958561892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03422
B03420
C03424
D03424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1666111006.602245%
B167034442.658205%
C167081280.766100%
D16585820549.472415%

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 18833 16737 221 221 1.17% 1.32%
B 18838 16773 49 49 0.26% 0.29%
C 18826 16767 4 4 0.02% 0.02%
D 18834 16671 7468 7468 39.65% 44.80%

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 8798014 23450.25 1830 1790 375.1
A 9 191 2211917 5892.08 1830 1790 375.1
A 10 255 35154 88.95 1830 1790 375.1
B 0 200 406715 1141.89 1846 1786 354.6
B 5 32 162990 454.59 1846 1786 354.6
B 0 190 137468 382.62 1846 1786 354.6
C 14 254 45584 104.15 1811 1814 420.2
C 0 207 19627 42.39 1811 1814 420.2
C 3 233 17796 38.03 1811 1814 420.2
D 12 1 21823956 75846.04 1137 1097 287.7
D 6 112 1300843 4517.31 1137 1097 287.7
D 12 233 75574 258.85 1137 1097 287.7

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