ASTROSAT CZTI

Data Quality Report

Orbit 44039

Creation date: 2024-06-27T22:58:36.670185
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_025T01_9000005936_44039cztM0_level2.fits modeM0/AS1A13_025T01_9000005936_44039cztM0_level2_quad_clean.evt
Size (bytes)445,821,120109,609,920
Size425.2 MB 104.5 MB
Events in quadrant A4,214,334741,427
Events in quadrant B3,316,354768,129
Events in quadrant C3,623,117727,822
Events in quadrant D4,866,127647,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169102
B0139312
C0149252
D0187432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6221911.462787%
B6221811.302041%
C62211121.800354%
D62212994.806301%

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 7476 6222 15 15 0.20% 0.24%
B 7476 6222 29 29 0.39% 0.47%
C 7476 6222 51 51 0.68% 0.82%
D 7476 6222 264 264 3.53% 4.24%

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 1269397 8433.54 728 715 150.4
A 14 238 44023 287.89 728 715 150.4
A 15 223 31266 203.09 728 715 150.4
B 0 200 153742 1078.74 732 712 141.9
B 4 170 75581 527.77 732 712 141.9
B 4 171 56934 396.32 732 712 141.9
C 3 233 395350 2318.41 720 724 170.2
C 1 241 298933 1751.97 720 724 170.2
C 5 250 70772 411.53 720 724 170.2
D 1 52 1104456 6152.27 705 682 179.4
D 5 235 226285 1257.48 705 682 179.4
D 5 222 155906 865.2 705 682 179.4

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