ASTROSAT CZTI

Data Quality Report

Orbit 45136

Creation date: 2024-06-27T23:09:49.860936
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_017T02_9000006046_45136cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45136cztM0_level2_quad_clean.evt
Size (bytes)1,124,844,480196,706,880
Size1.0 GB 187.6 MB
Events in quadrant A16,518,3711,097,186
Events in quadrant B6,736,0981,424,220
Events in quadrant C6,427,0531,375,905
Events in quadrant D10,935,7901,145,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582363
B0289613
C0284733
D0416813

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13196310923.560170%
B131972932.220202%
C131972972.250511%
D1319712639.570357%

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 14215 13196 2447 2447 17.21% 18.54%
B 14217 13199 14 14 0.10% 0.11%
C 14217 13199 90 90 0.63% 0.68%
D 14217 13199 817 817 5.75% 6.19%

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 15 223 6936653 25073.72 1330 1301 276.6
A 10 83 4106568 14841.97 1330 1301 276.6
A 13 248 270971 974.95 1330 1301 276.6
B 4 170 199745 657.79 1521 1469 301.4
B 0 183 122888 402.82 1521 1469 301.4
B 5 255 92433 301.78 1521 1469 301.4
C 14 254 240319 672.64 1496 1504 355.0
C 15 208 181502 506.98 1496 1504 355.0
C 1 3 70887 195.42 1496 1504 355.0
D 13 249 1386890 3764.11 1457 1412 368.1
D 4 232 808328 2192.26 1457 1412 368.1
D 13 29 790041 2142.57 1457 1412 368.1

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