ASTROSAT CZTI

Data Quality Report

Orbit 18229

Creation date: 2024-06-27T17:47:05.253323
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_9000002716_18229cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18229cztM0_level2_quad_clean.evt
Size (bytes)522,233,280129,965,760
Size498.0 MB 123.9 MB
Events in quadrant A4,290,172863,233
Events in quadrant B3,444,938890,853
Events in quadrant C3,315,750847,110
Events in quadrant D4,279,277836,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176281
B0149841
C0144781
D0175501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71513534.936373%
B7152520.727069%
C7152710.992729%
D7152991.384228%

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 7521 7152 215 215 2.86% 3.01%
B 7522 7153 14 14 0.19% 0.20%
C 7522 7153 0 0 0.00% 0.00%
D 7522 7153 46 46 0.61% 0.64%

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 15 174 1136359 6848.67 817 799 165.8
A 0 226 7073 37.84 817 799 165.8
A 12 194 6126 32.12 817 799 165.8
B 7 220 96750 606.0 831 810 158.3
B 4 171 49199 305.65 831 810 158.3
B 0 197 21589 131.25 831 810 158.3
C 14 238 123362 659.54 798 801 185.8
C 3 233 56750 301.08 798 801 185.8
C 8 128 9428 46.42 798 801 185.8
D 7 238 474391 2394.6 810 784 197.8
D 5 222 409455 2066.28 810 784 197.8
D 7 38 70154 350.74 810 784 197.8

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