ASTROSAT CZTI

Data Quality Report

Orbit 48398

Creation date: 2024-09-09T16:39:34.930980
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_029T01_9000006426_48398cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48398cztM0_level2_quad_clean.evt
Size (bytes)1,181,479,680222,301,440
Size1.1 GB 212.0 MB
Events in quadrant A15,013,0901,518,944
Events in quadrant B14,112,1401,257,340
Events in quadrant C6,301,9731,527,406
Events in quadrant D7,147,6941,391,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546061
B0521971
C0305721
D0328471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149975403.600720%
B14997301720.117357%
C14997350.233380%
D149971310.873508%

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 15417 14998 45 45 0.29% 0.30%
B 15417 14997 1881 1881 12.20% 12.54%
C 15417 14998 1 1 0.01% 0.01%
D 15417 14998 81 81 0.53% 0.54%

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 8565564 25616.48 1603 1568 334.3
A 13 248 204733 607.7 1603 1568 334.3
A 13 254 31072 88.25 1603 1568 334.3
B 12 16 7307222 25331.81 1459 1414 288.4
B 4 21 575784 1991.54 1459 1414 288.4
B 8 234 111343 381.16 1459 1414 288.4
C 15 208 58673 152.64 1589 1597 373.9
C 1 3 18375 44.87 1589 1597 373.9
C 13 61 10428 23.62 1589 1597 373.9
D 2 165 365472 925.85 1580 1531 393.1
D 2 249 218408 551.73 1580 1531 393.1
D 5 222 195325 493.01 1580 1531 393.1

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