ASTROSAT CZTI

Data Quality Report

Orbit 42982

Creation date: 2024-06-27T22:46:32.403780
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/AS1T05_148T01_9000005838_42982cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42982cztM0_level2_quad_clean.evt
Size (bytes)482,564,160105,727,680
Size460.2 MB 100.8 MB
Events in quadrant A3,620,564794,685
Events in quadrant B6,153,036635,539
Events in quadrant C2,694,137786,123
Events in quadrant D4,999,676628,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140772
B0218592
C0109362
D0182672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50931913.750245%
B5093136626.821127%
C509360.117809%
D509370013.744355%

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 7217 5094 148 148 2.05% 2.91%
B 7217 5094 1075 1075 14.90% 21.10%
C 7217 5094 2 2 0.03% 0.04%
D 7217 5094 675 675 9.35% 13.25%

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 594088 4048.42 643 629 146.6
A 15 237 470863 3207.81 643 629 146.6
A 15 222 38463 258.09 643 629 146.6
B 4 81 2378263 19742.87 551 539 120.4
B 4 171 1122154 9313.07 551 539 120.4
B 0 186 429239 3559.61 551 539 120.4
C 15 214 207300 1280.89 630 636 161.3
C 14 254 20639 123.98 630 636 161.3
C 7 220 5192 28.24 630 636 161.3
D 10 118 812724 5146.55 587 569 157.8
D 13 249 674352 4269.7 587 569 157.8
D 1 47 584026 3697.31 587 569 157.8

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