ASTROSAT CZTI

Data Quality Report

Orbit 20240806_A09_038T36_9000006374_level2

Creation date: 2024-08-10T09:34:04.073449
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/AS1A09_038T36_9000006374cztM0_level2.fits modeM0/AS1A09_038T36_9000006374cztM0_level2_quad_clean.evt
Size (bytes)123,719,040187,404,480
Size118.0 MB 178.7 MB
Events in quadrant A700,9381,183,907
Events in quadrant B699,6341,220,825
Events in quadrant C727,8081,206,249
Events in quadrant D616,8021,063,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546450
B0302820
C0297310
D0375540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145006454.448276%
B145003642.510345%
C145001671.151724%
D145017675.289290%

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 14989 14501 0 0 0.00% 0.00%
B 14989 14499 0 0 0.00% 0.00%
C 14989 14500 0 0 0.00% 0.00%
D 14991 14500 0 0 0.00% 0.00%

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 15 236 592 8.51 182 171 49.5
A 7 110 567 8.0 182 171 49.5
A 14 95 532 7.29 182 171 49.5
B 2 9 688 13.22 184 175 38.8
B 2 8 543 9.48 184 175 38.8
B 3 17 529 9.12 184 175 38.8
C 3 202 588 7.88 192 178 52.0
C 1 81 573 7.59 192 178 52.0
C 3 203 559 7.32 192 178 52.0
D 3 14 476 6.13 177 159 51.7
D 3 31 454 5.7 177 159 51.7
D 1 31 451 5.64 177 159 51.7

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