ASTROSAT CZTI

Data Quality Report

Orbit 42971

Creation date: 2024-06-27T22:46:25.415099
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/AS1T05_145T01_9000005836_42971cztM0_level2.fits modeM0/AS1T05_145T01_9000005836_42971cztM0_level2_quad_clean.evt
Size (bytes)614,396,16089,138,880
Size585.9 MB 85.0 MB
Events in quadrant A3,405,296781,960
Events in quadrant B12,300,910100,022
Events in quadrant C2,817,406758,244
Events in quadrant D3,779,327664,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141732
B0404062
C0118022
D0152352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5649460.814303%
B5649484685.785095%
C564960.106213%
D56492354.160028%

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 7111 5650 20 20 0.28% 0.35%
B 7111 5650 4620 4620 64.97% 81.77%
C 7111 5650 2 2 0.03% 0.04%
D 7111 5650 208 208 2.93% 3.68%

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 593581 3893.83 676 664 152.3
A 15 237 120073 784.19 676 664 152.3
A 13 6 34519 222.33 676 664 152.3
B 4 81 11538445 300989.38 181 177 38.3
B 4 171 26131 677.04 181 177 38.3
B 0 186 9586 245.44 181 177 38.3
C 15 214 228210 1396.47 660 669 162.9
C 14 254 13424 78.28 660 669 162.9
C 13 61 4496 23.49 660 669 162.9
D 1 47 386023 2262.36 642 625 170.4
D 1 52 205150 1200.6 642 625 170.4
D 13 249 194429 1137.67 642 625 170.4

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