ASTROSAT CZTI

Data Quality Report

Orbit 25331

Creation date: 2024-06-27T19:16:27.456983
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_059T01_9000003706_25331cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25331cztM0_level2_quad_clean.evt
Size (bytes)593,565,120119,698,560
Size566.1 MB 114.2 MB
Events in quadrant A3,811,904835,657
Events in quadrant B3,503,330836,036
Events in quadrant C3,573,619785,816
Events in quadrant D6,660,525727,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158440
B0144020
C0144640
D0244860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63131261.995882%
B63131231.948361%
C63131402.217646%
D631384213.337557%

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 7663 6313 0 0 0.00% 0.00%
B 7663 6313 0 0 0.00% 0.00%
C 7663 6313 0 0 0.00% 0.00%
D 7663 6313 675 675 8.81% 10.69%

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 15 173 290069 1611.62 914 899 179.4
A 13 254 10301 52.4 914 899 179.4
A 0 226 8111 40.19 914 899 179.4
B 3 112 19157 111.88 886 868 163.5
B 12 111 18698 109.07 886 868 163.5
B 11 111 16894 98.04 886 868 163.5
C 14 238 138550 701.99 859 867 196.1
C 9 54 63208 317.85 859 867 196.1
C 0 207 13546 64.64 859 867 196.1
D 1 52 2047210 10262.66 850 830 199.4
D 8 195 852024 4268.76 850 830 199.4
D 12 235 249245 1245.81 850 830 199.4

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