ASTROSAT CZTI

Data Quality Report

Orbit 22874

Creation date: 2024-06-27T18:46:55.278287
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/AS1A07_049T01_9000003380_22874cztM0_level2.evt modeM0/AS1A07_049T01_9000003380_22874cztM0_level2_quad_clean.evt
Size (bytes)542,845,44092,767,680
Size517.7 MB 88.5 MB
Events in quadrant A3,247,726602,064
Events in quadrant B3,388,349604,775
Events in quadrant C3,279,539578,518
Events in quadrant D6,051,663538,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143101
B0145541
C0143701
D0228221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6963430.617550%
B6964731.048248%
C6964751.076967%
D69645287.581850%

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 7333 6964 0 0 0.00% 0.00%
B 7334 6965 21 21 0.29% 0.30%
C 7334 6965 1 1 0.01% 0.01%
D 7334 6965 376 376 5.13% 5.40%

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 13 254 11675 64.02 842 822 169.5
A 3 137 7343 38.47 842 822 169.5
A 0 226 7178 37.49 842 822 169.5
B 0 228 66141 407.12 832 809 160.5
B 0 190 21858 131.17 832 809 160.5
B 12 111 19512 116.55 832 809 160.5
C 14 238 126544 664.99 800 804 189.1
C 10 22 36662 189.64 800 804 189.1
C 13 61 5578 25.25 800 804 189.1
D 7 238 1365409 7102.88 790 768 192.1
D 12 233 487026 2530.94 790 768 192.1
D 1 52 400330 2079.7 790 768 192.1

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