ASTROSAT CZTI

Data Quality Report

Orbit 46932

Creation date: 2024-06-27T23:29:36.128507
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/AS1A13_077T01_9000006286_46932cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46932cztM0_level2_quad_clean.evt
Size (bytes)1,232,490,240224,720,640
Size1.1 GB 214.3 MB
Events in quadrant A13,939,8741,495,376
Events in quadrant B11,811,8771,426,414
Events in quadrant C7,087,3771,519,731
Events in quadrant D11,633,7801,333,892

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511921
B0452184
C0321241
D0449841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148906584.419073%
B14890168311.302888%
C148902591.739422%
D1489010286.903962%

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 15141 14891 3 3 0.02% 0.02%
B 15141 14891 959 959 6.33% 6.44%
C 15141 14891 60 60 0.40% 0.40%
D 15141 14891 673 673 4.44% 4.52%

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 10 83 7175434 20130.77 1708 1670 356.4
A 9 191 105914 292.53 1708 1670 356.4
A 7 3 30925 82.09 1708 1670 356.4
B 0 200 2131833 6403.44 1659 1602 332.7
B 3 112 1524864 4578.9 1659 1602 332.7
B 5 32 1114245 3344.59 1659 1602 332.7
C 14 254 394544 977.44 1692 1699 401.9
C 0 207 60010 145.08 1692 1699 401.9
C 1 3 19263 43.7 1692 1699 401.9
D 1 52 3131561 7394.54 1661 1608 423.3
D 13 249 749675 1767.31 1661 1608 423.3
D 2 249 597540 1407.89 1661 1608 423.3

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