ASTROSAT CZTI

Data Quality Report

Orbit 40889

Creation date: 2024-06-27T22:21:48.104812
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/AS1A12_097T01_9000005574_40889cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40889cztM0_level2_quad_clean.evt
Size (bytes)977,664,960203,247,360
Size932.4 MB 193.8 MB
Events in quadrant A6,981,0601,384,673
Events in quadrant B10,630,0081,336,639
Events in quadrant C6,116,4041,379,926
Events in quadrant D11,461,3911,158,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0551
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02839711
B0402948
C02629410
D04293020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12939450.347786%
B1293912429.598887%
C12938210.162313%
D1293812129.367754%

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 21345 12943 17 17 0.08% 0.13%
B 21345 12943 833 833 3.90% 6.44%
C 21345 12943 8 8 0.04% 0.06%
D 21345 12942 986 986 4.62% 7.62%

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 1213213 4163.28 1424 1396 291.1
A 13 248 135462 460.59 1424 1396 291.1
A 2 79 56629 189.75 1424 1396 291.1
B 5 255 2117220 7977.88 1375 1336 265.2
B 4 171 1834459 6911.74 1375 1336 265.2
B 0 229 484882 1823.2 1375 1336 265.2
C 15 214 551975 1695.39 1396 1402 324.7
C 0 10 82440 249.54 1396 1402 324.7
C 14 254 26890 78.49 1396 1402 324.7
D 12 233 2161919 6541.44 1347 1310 330.3
D 12 79 1483040 4486.07 1347 1310 330.3
D 13 249 977859 2956.59 1347 1310 330.3

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