ASTROSAT CZTI

Data Quality Report

Orbit 05909

Creation date: 2024-06-27T15:00:44.036103
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/AS1A02_174T01_9000000766_05909cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05909cztM0_level2_quad_clean.evt
Size (bytes)755,245,440112,968,000
Size720.3 MB 107.7 MB
Events in quadrant A4,751,207688,537
Events in quadrant B5,382,967682,696
Events in quadrant C6,032,680674,088
Events in quadrant D5,977,188632,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092
B092
C093
D093

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262294210
B0277474518
C0323116803
D0308265733

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026246
B026248
C026242
D026240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108391000.922594%
B107732091.940035%
C105783042.873889%
D106352182.049835%

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 13767 11958 0 0 0.00% 0.00%
B 13767 11922 64 64 0.46% 0.54%
C 13766 11761 159 159 1.16% 1.35%
D 13767 11827 122 122 0.89% 1.03%

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 12 194 11999 42.61 1234 1204 253.4
A 0 226 11865 42.08 1234 1204 253.4
A 13 254 5345 16.34 1234 1204 253.4
B 15 255 297665 1259.57 1232 1202 235.4
B 0 214 96052 402.99 1232 1202 235.4
B 15 204 94483 396.32 1232 1202 235.4
C 9 247 1509075 5605.28 1158 1164 269.0
C 13 61 9100 29.5 1158 1164 269.0
C 8 222 3536 8.82 1158 1164 269.0
D 2 152 769116 2679.77 1166 1128 286.6
D 2 63 358887 1248.34 1166 1128 286.6
D 8 195 232452 807.17 1166 1128 286.6

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