ASTROSAT CZTI

Data Quality Report

Orbit 15184

Creation date: 2024-06-27T17:04:56.721660
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/AS1T02_068T01_9000002238_15184cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15184cztM0_level2_quad_clean.evt
Size (bytes)442,463,04089,573,760
Size422.0 MB 85.4 MB
Events in quadrant A3,365,877579,572
Events in quadrant B3,130,875597,959
Events in quadrant C3,320,344571,778
Events in quadrant D3,168,532537,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141373
B0129962
C0135222
D0135592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6094370.607155%
B6094280.459468%
C6094150.246144%
D6094631.033804%

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 7470 6096 0 0 0.00% 0.00%
B 7470 6096 0 0 0.00% 0.00%
C 7470 6096 0 0 0.00% 0.00%
D 7470 6096 38 38 0.51% 0.62%

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 15 239 364043 2325.19 777 763 156.2
A 12 189 17276 105.69 777 763 156.2
A 0 226 6710 38.06 777 763 156.2
B 12 111 17102 111.23 787 768 146.9
B 3 209 15907 103.09 787 768 146.9
B 11 111 14304 92.17 787 768 146.9
C 3 233 376941 2162.92 755 761 173.9
C 13 61 5476 27.11 755 761 173.9
C 7 247 2262 8.63 755 761 173.9
D 2 33 232884 1282.38 744 724 181.0
D 13 249 56613 308.71 744 724 181.0
D 2 120 26802 144.05 744 724 181.0

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