ASTROSAT CZTI

Data Quality Report

Orbit 21167

Creation date: 2024-06-27T18:24:24.322413
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/AS1C04_001T01_9000003126_21167cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21167cztM0_level2_quad_clean.evt
Size (bytes)652,711,680125,242,560
Size622.5 MB 119.4 MB
Events in quadrant A3,428,751855,173
Events in quadrant B3,375,541874,771
Events in quadrant C3,205,015847,347
Events in quadrant D9,279,344723,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150881
B0146141
C0143011
D0324721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70701301.838755%
B7071570.806109%
C7071540.763683%
D7071185526.233913%

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 7350 7071 59 59 0.80% 0.83%
B 7351 7072 6 6 0.08% 0.08%
C 7351 7072 0 0 0.00% 0.00%
D 7351 7072 1609 1609 21.89% 22.75%

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 5 16 297301 1800.32 807 789 164.7
A 2 79 19211 111.85 807 789 164.7
A 13 254 10615 59.66 807 789 164.7
B 0 189 28161 176.47 813 792 155.1
B 10 224 25492 159.26 813 792 155.1
B 0 182 22448 139.63 813 792 155.1
C 14 238 122710 664.24 783 787 183.6
C 3 233 13527 69.4 783 787 183.6
C 8 128 8761 43.44 783 787 183.6
D 1 20 3089865 17937.99 713 691 172.2
D 5 222 1302062 7556.71 713 691 172.2
D 1 239 1295248 7517.14 713 691 172.2

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