ASTROSAT CZTI

Data Quality Report

Orbit 01309

Creation date: 2024-06-27T14:10:46.502663
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/AS1G04_002T02_9000000230_01309cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01309cztM0_level2_quad_clean.evt
Size (bytes)1,405,673,28098,369,280
Size1.3 GB 93.8 MB
Events in quadrant A8,581,359654,967
Events in quadrant B9,383,417656,392
Events in quadrant C8,354,483635,032
Events in quadrant D15,802,665555,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303582
B0327281
C0296631
D0519691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68281091.596368%
B6828380.556532%
C6828220.322203%
D6828169024.751025%

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 7193 6828 405 405 5.63% 5.93%
B 7193 6830 567 567 7.88% 8.30%
C 7193 6828 213 213 2.96% 3.12%
D 7193 6828 4348 4348 60.45% 63.68%

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 4 32 380945 745.06 2110 2126 508.4
A 12 133 38033 70.62 2110 2126 508.4
A 15 127 24073 43.17 2110 2126 508.4
B 8 4 772456 1490.77 2179 2190 516.7
B 12 52 130249 247.85 2179 2190 516.7
B 6 53 84887 160.05 2179 2190 516.7
C 15 241 331306 589.37 1996 2066 558.6
C 8 208 67767 117.61 1996 2066 558.6
C 9 52 57383 99.02 1996 2066 558.6
D 13 169 8066281 14250.62 1830 1892 565.9
D 12 22 397464 699.02 1830 1892 565.9
D 10 84 363814 639.55 1830 1892 565.9

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