ASTROSAT CZTI

Data Quality Report

Orbit 54223

Creation date: 2025-10-07T10:35:27.723014
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/AS1C09_004T08_9000006514_54223cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54223cztM0_level2_quad_clean.evt
Size (bytes)631,543,68072,046,080
Size602.3 MB 68.7 MB
Events in quadrant A3,555,310548,260
Events in quadrant B3,131,443609,983
Events in quadrant C2,875,320527,606
Events in quadrant D13,354,07681,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146991
B0135641
C0130451
D0437467

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59242544.287643%
B5925751.265823%
C5925590.995781%
D5924500184.419311%

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 6969 5925 202 202 2.90% 3.41%
B 6970 5926 27 27 0.39% 0.46%
C 6970 5926 46 46 0.66% 0.78%
D 6969 5925 4372 4372 62.73% 73.79%

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 12 17 576705 3799.79 612 600 151.6
A 15 174 253700 1669.36 612 600 151.6
A 3 14 96789 634.43 612 600 151.6
B 5 236 201427 1535.29 612 591 130.8
B 4 171 177699 1353.9 612 591 130.8
B 5 185 164961 1256.53 612 591 130.8
C 12 250 188141 1144.69 593 586 163.8
C 10 171 114003 692.21 593 586 163.8
C 15 189 79806 483.5 593 586 163.8
D 8 176 12248260 203681.01 207 197 60.1
D 8 160 110636 1836.56 207 197 60.1
D 15 170 31239 516.22 207 197 60.1

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