ASTROSAT CZTI

Data Quality Report

Orbit 31448

Creation date: 2024-06-27T20:28:37.107005
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/AS1C06_005T01_9000004580_31448cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31448cztM0_level2_quad_clean.evt
Size (bytes)1,245,461,760249,799,680
Size1.2 GB 238.2 MB
Events in quadrant A6,202,0841,732,897
Events in quadrant B14,749,2361,541,799
Events in quadrant C7,349,6061,686,765
Events in quadrant D8,496,3011,660,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277232
B0539202
C0304932
D0342752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136611220.893053%
B13662235217.215635%
C136624253.110818%
D136623122.283707%

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 14626 13661 0 0 0.00% 0.00%
B 14627 13662 1860 1860 12.72% 13.61%
C 14627 13662 51 51 0.35% 0.37%
D 14627 13662 211 211 1.44% 1.54%

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 13 254 29123 86.24 1605 1574 319.4
A 3 137 16424 46.49 1605 1574 319.4
A 0 226 13559 37.52 1605 1574 319.4
B 12 1 4395380 15809.32 1452 1413 277.9
B 6 159 3614907 13001.21 1452 1413 277.9
B 5 172 440514 1579.87 1452 1413 277.9
C 3 233 742228 2088.03 1532 1543 354.7
C 14 238 295349 828.26 1532 1543 354.7
C 0 10 212580 594.93 1532 1543 354.7
D 8 195 1547544 4176.51 1553 1509 370.2
D 12 218 398434 1072.27 1553 1509 370.2
D 13 249 175117 468.99 1553 1509 370.2

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