ASTROSAT CZTI

Data Quality Report

Orbit 33660

Creation date: 2024-06-27T20:51:13.313770
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/AS1T04_076T01_9000004810_33660cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33660cztM0_level2_quad_clean.evt
Size (bytes)580,023,36074,188,800
Size553.2 MB 70.8 MB
Events in quadrant A4,767,014440,827
Events in quadrant B4,082,392465,243
Events in quadrant C3,523,213465,476
Events in quadrant D4,773,225441,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181083
B0161972
C0143762
D0185452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62173125.018498%
B62173034.873733%
C6217631.013350%
D62171662.670098%

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 8931 6219 302 302 3.38% 4.86%
B 8931 6218 218 218 2.44% 3.51%
C 8931 6219 54 54 0.60% 0.87%
D 8931 6218 133 133 1.49% 2.14%

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 15 169 1662432 11661.26 712 699 142.5
A 15 237 267750 1874.04 712 699 142.5
A 15 253 32214 221.16 712 699 142.5
B 5 172 1075415 7745.53 713 695 138.8
B 15 222 58205 414.48 713 695 138.8
B 5 255 37315 263.92 713 695 138.8
C 15 214 286954 1762.16 704 711 162.4
C 3 233 206044 1264.06 704 711 162.4
C 0 10 189178 1160.23 704 711 162.4
D 8 195 1275122 7382.74 702 684 172.6
D 2 250 191529 1105.55 702 684 172.6
D 13 249 143421 826.86 702 684 172.6

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