ASTROSAT CZTI

Data Quality Report

Orbit 23961

Creation date: 2024-06-27T19:00:31.854942
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/AS1A07_101T02_9000003544_23961cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23961cztM0_level2_quad_clean.evt
Size (bytes)629,801,280106,476,480
Size600.6 MB 101.5 MB
Events in quadrant A3,700,639685,000
Events in quadrant B4,495,036691,270
Events in quadrant C4,264,860674,434
Events in quadrant D6,084,274631,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162302
B0186682
C0176992
D0235202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7802500.640861%
B78032663.408945%
C78032563.280789%
D78037099.086249%

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 8467 7804 0 0 0.00% 0.00%
B 8468 7805 77 77 0.91% 0.99%
C 8468 7805 70 70 0.83% 0.90%
D 8468 7805 486 486 5.74% 6.23%

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 13 254 13382 64.24 959 936 193.8
A 3 137 8740 40.28 959 936 193.8
A 0 226 8144 37.2 959 936 193.8
B 3 64 701714 3834.96 952 927 182.7
B 12 111 22429 117.66 952 927 182.7
B 15 33 19968 104.2 952 927 182.7
C 0 10 473533 2206.59 921 928 214.2
C 14 238 145575 675.36 921 928 214.2
C 7 221 30392 137.57 921 928 214.2
D 12 218 1473894 6762.77 898 872 217.8
D 1 52 582523 2670.41 898 872 217.8
D 2 82 416183 1906.73 898 872 217.8

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