ASTROSAT CZTI

Data Quality Report

Orbit 09243

Creation date: 2024-06-27T15:43:19.716400
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/AS1G07_003T01_9000001290_09243cztM0_level2.evt modeM0/AS1G07_003T01_9000001290_09243cztM0_level2_quad_clean.evt
Size (bytes)998,844,480162,604,800
Size952.6 MB 155.1 MB
Events in quadrant A10,297,5821,011,418
Events in quadrant B6,994,9371,024,731
Events in quadrant C5,765,9151,011,183
Events in quadrant D6,321,251988,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424743431
B0316752708
C0287882554
D0307812905

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0201
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029022
B029020
C029028
D028927

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12771132910.406389%
B128782752.135425%
C12909740.573243%
D128252421.886940%

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 16206 13216 1032 1032 6.37% 7.81%
B 16206 13310 146 146 0.90% 1.10%
C 16207 13314 0 0 0.00% 0.00%
D 16207 13249 143 143 0.88% 1.08%

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 5 2070107 7055.76 1440 1412 293.2
A 15 223 1132568 3858.07 1440 1412 293.2
A 15 174 806256 2745.1 1440 1412 293.2
B 6 51 464106 1594.66 1522 1485 290.1
B 4 48 265927 911.54 1522 1485 290.1
B 0 214 137408 468.53 1522 1485 290.1
C 13 61 11368 29.05 1472 1476 340.5
C 8 222 10245 25.75 1472 1476 340.5
C 3 254 8242 19.87 1472 1476 340.5
D 7 71 451019 1136.8 1455 1421 395.5
D 1 52 161452 404.64 1455 1421 395.5
D 12 233 80121 198.99 1455 1421 395.5

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