ASTROSAT CZTI

Data Quality Report

Orbit 25329

Creation date: 2024-06-27T19:16:26.001510
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/AS1A09_059T01_9000003706_25329cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25329cztM0_level2_quad_clean.evt
Size (bytes)937,670,400148,752,000
Size894.2 MB 141.9 MB
Events in quadrant A6,378,034965,680
Events in quadrant B5,867,096972,699
Events in quadrant C6,869,376911,473
Events in quadrant D8,523,150876,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261630
B0243310
C0275070
D0332120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112471481.315906%
B112471461.298124%
C112485044.480797%
D112483663.253912%

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 13657 11247 0 0 0.00% 0.00%
B 13658 11248 1 1 0.01% 0.01%
C 13658 11248 200 200 1.46% 1.78%
D 13658 11248 224 224 1.64% 1.99%

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 15 173 532742 1775.6 1518 1490 299.2
A 13 254 17292 52.81 1518 1490 299.2
A 0 226 13073 38.71 1518 1490 299.2
B 12 111 33125 114.08 1491 1455 277.6
B 3 112 30343 104.06 1491 1455 277.6
B 11 111 30097 103.17 1491 1455 277.6
C 9 54 1119563 3496.95 1409 1422 319.7
C 14 238 229292 712.66 1409 1422 319.7
C 3 233 15520 44.09 1409 1422 319.7
D 8 195 2120235 6169.47 1443 1404 343.4
D 1 52 415941 1207.02 1443 1404 343.4
D 7 238 360368 1045.21 1443 1404 343.4

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