ASTROSAT CZTI

Data Quality Report

Orbit 20240111_A13_024T02_9000006026_level2

Creation date: 2024-01-15T15:19:38.400984
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_024T02_9000006026cztM0_level2.fits modeM0/AS1A13_024T02_9000006026cztM0_level2_quad_clean.evt
Size (bytes)394,367,040504,662,400
Size376.1 MB 481.3 MB
Events in quadrant A2,009,2242,526,099
Events in quadrant B2,338,3623,504,414
Events in quadrant C2,435,6363,340,817
Events in quadrant D1,898,8642,661,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09640
B09640
C09640
D09640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02432840
B01075520
C0995920
D02315470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A473441497731.634420%
B4734515663.307635%
C473455181.094097%
D47343701314.813172%

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 52098 47070 0 0 0.00% 0.00%
B 52099 47278 0 0 0.00% 0.00%
C 52099 47334 0 0 0.00% 0.00%
D 52099 47228 0 0 0.00% 0.00%

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 7 110 1683 8.83 523 490 135.1
A 7 109 1585 8.11 523 490 135.1
A 0 29 1579 8.06 523 490 135.1
B 2 9 2158 12.77 617 587 123.0
B 2 8 1793 9.8 617 587 123.0
B 3 17 1673 8.83 617 587 123.0
C 1 81 1913 7.88 643 598 166.8
C 3 202 1869 7.62 643 598 166.8
C 1 80 1864 7.59 643 598 166.8
D 8 176 1835 8.83 543 492 152.2
D 4 16 1401 5.97 543 492 152.2
D 10 189 1394 5.93 543 492 152.2

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