ASTROSAT CZTI

Data Quality Report

Orbit 19693

Creation date: 2024-06-27T18:06:14.283251
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_075T03_9000002940_19693cztM0_level2.evt modeM0/AS1A05_075T03_9000002940_19693cztM0_level2_quad_clean.evt
Size (bytes)589,708,800116,009,280
Size562.4 MB 110.6 MB
Events in quadrant A3,960,618761,088
Events in quadrant B3,983,919763,186
Events in quadrant C3,937,974728,171
Events in quadrant D5,424,151695,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172921
B0170911
C0167821
D0216071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8146851.043457%
B81461041.276700%
C81461211.485392%
D81465286.481709%

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 8661 8147 6 6 0.07% 0.07%
B 8661 8147 11 11 0.13% 0.14%
C 8661 8147 0 0 0.00% 0.00%
D 8661 8147 408 408 4.71% 5.01%

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 234899 1187.3 966 945 197.0
A 0 226 8275 37.2 966 945 197.0
A 3 137 7973 35.67 966 945 197.0
B 7 220 82332 442.24 958 931 184.1
B 4 216 36149 191.33 958 931 184.1
B 0 198 31735 167.35 958 931 184.1
C 3 233 164731 753.67 926 931 217.3
C 14 238 144918 662.5 926 931 217.3
C 13 61 6415 25.23 926 931 217.3
D 7 238 1436396 6465.99 915 888 222.0
D 1 20 157783 706.71 915 888 222.0
D 1 52 148494 664.86 915 888 222.0

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