ASTROSAT CZTI

Data Quality Report

Orbit 20240513_A13_039T01_9000006246_level2

Creation date: 2024-05-18T10:47:25.637180
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_039T01_9000006246cztM0_level2.fits modeM0/AS1A13_039T01_9000006246cztM0_level2_quad_clean.evt
Size (bytes)816,497,2801,251,601,920
Size778.7 MB 1.2 GB
Events in quadrant A4,701,1708,053,140
Events in quadrant B4,630,7428,258,009
Events in quadrant C4,820,7547,998,193
Events in quadrant D4,013,0727,043,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03293900
B02233020
C02046370
D02619030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019440
B019440
C019440
D019440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9565527942.920914%
B9566720042.094766%
C9566810401.087093%
D9566844234.623281%

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 114283 95696 0 0 0.00% 0.00%
B 114283 95665 0 0 0.00% 0.00%
C 114283 95692 0 0 0.00% 0.00%
D 114283 95588 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 7 110 3827 8.42 1229 1152 317.7
A 0 29 3708 8.04 1229 1152 317.7
A 14 95 3637 7.82 1229 1152 317.7
B 2 9 4357 13.27 1227 1172 240.1
B 2 8 3636 10.26 1227 1172 240.1
B 3 17 3412 9.33 1227 1172 240.1
C 3 202 3888 8.06 1276 1187 335.3
C 3 203 3756 7.66 1276 1187 335.3
C 1 81 3677 7.43 1276 1187 335.3
D 10 189 3099 6.46 1152 1044 318.2
D 6 38 2960 6.02 1152 1044 318.2
D 4 16 2927 5.92 1152 1044 318.2

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