ASTROSAT CZTI

Data Quality Report

Orbit 44827

Creation date: 2024-06-27T23:06:57.511240
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/AS1A13_017T01_9000006028_44827cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44827cztM0_level2_quad_clean.evt
Size (bytes)664,516,800130,256,640
Size633.7 MB 124.2 MB
Events in quadrant A6,039,676909,802
Events in quadrant B4,559,229932,014
Events in quadrant C7,142,829746,054
Events in quadrant D6,198,788766,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252520
B0195690
C0277040
D0246710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8481510.601344%
B84811361.603584%
C8482147117.342608%
D84815977.039264%

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 8481 8481 8 8 0.09% 0.09%
B 8481 8481 67 67 0.79% 0.79%
C 8482 8482 1218 1218 14.36% 14.36%
D 8481 8481 519 519 6.12% 6.12%

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 10 83 2247100 11105.7 957 936 202.3
A 13 248 67546 329.34 957 936 202.3
A 7 3 17835 83.55 957 936 202.3
B 10 245 178891 929.1 956 925 191.5
B 5 172 169705 881.15 956 925 191.5
B 5 255 131605 682.24 956 925 191.5
C 14 254 2480919 12061.84 863 867 205.6
C 12 2 1222237 5940.18 863 867 205.6
C 1 3 29522 139.36 863 867 205.6
D 13 171 895033 3909.19 905 878 228.7
D 2 249 751668 3282.41 905 878 228.7
D 13 249 437132 1907.28 905 878 228.7

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