ASTROSAT CZTI

Data Quality Report

Orbit 03912

Creation date: 2024-06-27T14:35:09.704926
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/AS1G05_172T01_9000000502_03912cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03912cztM0_level2_quad_clean.evt
Size (bytes)502,007,04086,713,920
Size478.8 MB 82.7 MB
Events in quadrant A3,777,831528,585
Events in quadrant B3,736,438536,113
Events in quadrant C3,211,280536,226
Events in quadrant D3,979,359514,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163201
B0158810
C0151260
D0172480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73382463.352412%
B73381612.194058%
C7338470.640501%
D73381431.948760%

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 7338 7338 52 52 0.71% 0.71%
B 7338 7338 37 37 0.50% 0.50%
C 7338 7338 0 0 0.00% 0.00%
D 7338 7338 42 42 0.57% 0.57%

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 0 118 310736 1780.36 845 822 174.1
A 0 50 97257 553.99 845 822 174.1
A 0 226 36007 202.13 845 822 174.1
B 15 204 191423 1156.94 849 828 164.7
B 7 221 104160 627.24 849 828 164.7
B 0 172 92585 556.98 849 828 164.7
C 13 61 6970 31.98 820 822 192.2
C 1 16 3975 16.4 820 822 192.2
C 7 247 2464 8.54 820 822 192.2
D 2 32 667572 3359.1 823 798 198.5
D 13 239 39503 194.99 823 798 198.5
D 2 14 34444 169.5 823 798 198.5

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
Veto Counter