ASTROSAT CZTI

Data Quality Report

Orbit 00650

Creation date: 2024-06-27T14:01:00.768335
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/AS1P01_126T04_9000000092_00650cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00650cztM0_level2_quad_clean.evt
Size (bytes)764,147,52043,600,320
Size728.7 MB 41.6 MB
Events in quadrant A5,748,023244,102
Events in quadrant B5,881,068250,942
Events in quadrant C5,410,592243,962
Events in quadrant D5,773,073233,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205662
B0209752
C0196064
D0206762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4951120.242375%
B4951170.343365%
C495020.040404%
D4950511.030303%

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 7106 4952 99 99 1.39% 2.00%
B 7106 4952 83 83 1.17% 1.68%
C 7105 4951 32 32 0.45% 0.65%
D 7105 4951 160 160 2.25% 3.23%

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 0 238 37453 110.9 1460 1441 324.7
A 13 190 24612 71.36 1460 1441 324.7
A 15 171 21744 62.52 1460 1441 324.7
B 0 220 40855 113.41 1493 1504 347.0
B 5 191 37021 102.36 1493 1504 347.0
B 4 172 24574 66.49 1493 1504 347.0
C 9 52 36937 93.28 1361 1408 380.9
C 1 1 17632 42.59 1361 1408 380.9
C 15 241 9705 21.78 1361 1408 380.9
D 12 237 355656 886.05 1274 1319 399.9
D 13 221 141299 350.03 1274 1319 399.9
D 13 216 104296 257.5 1274 1319 399.9

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