ASTROSAT CZTI

Data Quality Report

Orbit 20221103_A12_025T10_9000005384_level2

Creation date: 2022-11-07T17:09:12.274040
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/AS1A12_025T10_9000005384cztM0_level2.fits modeM0/AS1A12_025T10_9000005384cztM0_level2_quad_clean.evt
Size (bytes)238,734,720239,114,880
Size227.7 MB 228.0 MB
Events in quadrant A1,438,8861,450,284
Events in quadrant B1,335,7941,350,047
Events in quadrant C1,423,1161,414,207
Events in quadrant D1,171,2301,166,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05520
B05520
C05520
D05520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610280
B0701460
C0547990
D01151760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270411830.676750%
B2704117506.471654%
C27041210.077660%
D2704118826.959802%

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 33996 27039 0 0 0.00% 0.00%
B 33996 26964 0 0 0.00% 0.00%
C 33996 27041 0 0 0.00% 0.00%
D 33996 27038 0 0 0.00% 0.00%

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 9 19 1214 8.96 375 352 96.2
A 7 110 1213 8.95 375 352 96.2
A 0 29 1148 8.27 375 352 96.2
B 2 9 1170 11.81 353 336 70.6
B 3 80 1089 10.67 353 336 70.6
B 5 255 942 8.58 353 336 70.6
C 1 81 1217 8.87 376 351 97.6
C 1 80 1172 8.41 376 351 97.6
C 3 158 992 6.57 376 351 97.6
D 4 160 886 6.49 334 303 89.8
D 1 3 878 6.4 334 303 89.8
D 7 3 865 6.26 334 303 89.8

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