ASTROSAT CZTI

Data Quality Report

Orbit 20703

Creation date: 2024-06-27T18:16:31.764256
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/AS1A05_115T03_9000003032_20703cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20703cztM0_level2_quad_clean.evt
Size (bytes)155,805,12036,371,520
Size148.6 MB 34.7 MB
Events in quadrant A1,036,509242,447
Events in quadrant B1,201,455239,670
Events in quadrant C1,033,360229,915
Events in quadrant D1,290,419225,024

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114019670406234446
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059751387
B065681509
C059611360
D069721626

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05913
B06014
C06016
D05713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228020.087719%
B2266321.412180%
C228990.393185%
D2256210.930851%

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 6836 2356 0 0 0.00% 0.00%
B 6824 2338 20 20 0.29% 0.86%
C 6845 2362 0 0 0.00% 0.00%
D 6820 2329 18 18 0.26% 0.77%

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 9 143 3991 66.54 268 263 56.0
A 0 226 2291 36.19 268 263 56.0
A 3 137 2242 35.32 268 263 56.0
B 7 220 151739 2880.59 263 257 52.6
B 12 111 6037 109.91 263 257 52.6
B 3 64 5786 105.14 263 257 52.6
C 14 238 38993 633.25 252 254 61.2
C 3 233 3972 60.78 252 254 61.2
C 8 128 2155 31.07 252 254 61.2
D 1 20 110712 1729.77 254 247 63.9
D 5 222 84327 1316.61 254 247 63.9
D 13 153 47895 746.12 254 247 63.9

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