ASTROSAT CZTI

Data Quality Report

Orbit 20273

Creation date: 2024-06-27T18:13:19.851356
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/AS1A05_175T01_9000003004_20273cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20273cztM0_level2_quad_clean.evt
Size (bytes)594,840,960110,007,360
Size567.3 MB 104.9 MB
Events in quadrant A4,281,689699,709
Events in quadrant B4,115,507708,749
Events in quadrant C4,000,214683,472
Events in quadrant D5,053,260661,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181892
B0175882
C0171372
D0205712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83111531.840934%
B83121261.515881%
C83121061.275265%
D83121912.297883%

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 9926 8313 32 32 0.32% 0.38%
B 9927 8314 16 16 0.16% 0.19%
C 9927 8314 0 0 0.00% 0.00%
D 9927 8314 117 117 1.18% 1.41%

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 14 238 258217 1258.19 1009 987 204.4
A 4 2 32882 156.01 1009 987 204.4
A 8 205 29085 137.44 1009 987 204.4
B 7 220 70543 361.04 1008 982 192.7
B 12 111 23592 117.35 1008 982 192.7
B 11 111 20859 103.17 1008 982 192.7
C 14 238 151879 660.14 973 979 228.6
C 3 233 21736 90.81 973 979 228.6
C 9 221 16893 69.62 973 979 228.6
D 1 52 1157146 4881.71 978 950 236.8
D 9 1 70870 295.22 978 950 236.8
D 2 234 52324 216.91 978 950 236.8

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