ASTROSAT CZTI

Data Quality Report

Orbit 20230131_A12_022T01_9000005494_level2

Creation date: 2023-02-08T14:22:54.945496
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_022T01_9000005494cztM0_level2.fits modeM0/AS1A12_022T01_9000005494cztM0_level2_quad_clean.evt
Size (bytes)2,565,950,4002,998,615,680
Size2.4 GB 2.8 GB
Events in quadrant A15,395,61618,583,426
Events in quadrant B14,890,79818,919,183
Events in quadrant C15,001,15017,705,100
Events in quadrant D13,074,59016,281,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057680
B057680
C057680
D057680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06929900
B06180200
C07732330
D07790420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010880
B010880
C010880
D010880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28231087833.111119%
B28230832431.148745%
C282308112994.002366%
D282310155685.514505%

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 389526 282084 0 0 0.00% 0.00%
B 389526 282265 0 0 0.00% 0.00%
C 389526 282223 0 0 0.00% 0.00%
D 389526 282055 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 12454 8.76 4025 3781 990.4
A 0 29 12393 8.7 4025 3781 990.4
A 7 110 12364 8.67 4025 3781 990.4
B 2 9 13105 12.21 3950 3772 764.5
B 3 80 10419 8.69 3950 3772 764.5
B 2 8 10395 8.66 3950 3772 764.5
C 1 81 12384 8.65 3966 3719 1001.3
C 1 80 11966 8.24 3966 3719 1001.3
C 3 202 11868 8.14 3966 3719 1001.3
D 7 3 9521 6.12 3749 3430 994.7
D 10 189 9482 6.08 3749 3430 994.7
D 4 160 9413 6.01 3749 3430 994.7

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