ASTROSAT CZTI

Data Quality Report

Orbit 00822

Creation date: 2024-06-27T14:03:26.274270
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_010T01_9000000112_00822cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00822cztM0_level2_quad_clean.evt
Size (bytes)922,772,16087,667,200
Size880.0 MB 83.6 MB
Events in quadrant A6,630,644578,826
Events in quadrant B7,843,003570,160
Events in quadrant C6,461,665559,542
Events in quadrant D6,634,089549,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237430
B0273780
C0232810
D0237770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5673410.722722%
B56732524.442094%
C5674621.092704%
D5673951.674599%

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 6813 5673 185 185 2.72% 3.26%
B 6813 5673 679 679 9.97% 11.97%
C 6814 5674 166 166 2.44% 2.93%
D 6813 5673 243 243 3.57% 4.28%

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 69 39368 90.95 1706 1719 414.0
A 15 233 39153 90.43 1706 1719 414.0
A 11 79 7680 14.4 1706 1719 414.0
B 3 204 950910 2278.28 1768 1777 416.6
B 0 220 62758 146.38 1768 1777 416.6
B 4 232 23203 51.43 1768 1777 416.6
C 9 52 136425 308.69 1575 1626 436.7
C 15 241 58171 129.49 1575 1626 436.7
C 1 192 45716 100.96 1575 1626 436.7
D 13 200 275908 577.88 1529 1579 474.7
D 1 4 275835 577.73 1529 1579 474.7
D 2 216 161777 337.46 1529 1579 474.7

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