ASTROSAT CZTI

Data Quality Report

Orbit 37268

Creation date: 2024-06-27T21:37:38.650119
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_087T01_9000005292_37268cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37268cztM0_level2_quad_clean.evt
Size (bytes)224,205,12035,775,360
Size213.8 MB 34.1 MB
Events in quadrant A1,650,374225,318
Events in quadrant B1,498,641227,852
Events in quadrant C1,718,503217,791
Events in quadrant D1,729,873211,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066431
B061861
C067171
D069741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2810672.384342%
B2810170.604982%
C28101013.594306%
D2810963.416370%

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 4093 2811 33 33 0.81% 1.17%
B 4093 2811 4 4 0.10% 0.14%
C 4093 2811 104 104 2.54% 3.70%
D 4093 2811 69 69 1.69% 2.45%

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 15 237 137876 1993.38 331 324 69.0
A 10 83 137492 1987.82 331 324 69.0
A 15 222 53022 763.69 331 324 69.0
B 0 190 67825 1041.06 329 320 64.8
B 0 213 54860 841.11 329 320 64.8
B 0 230 36872 563.7 329 320 64.8
C 14 254 263123 3427.22 319 321 76.7
C 15 214 118550 1541.83 319 321 76.7
C 0 10 67116 871.08 319 321 76.7
D 2 249 280437 3542.69 320 311 79.1
D 2 153 97016 1223.0 320 311 79.1
D 13 249 31820 398.49 320 311 79.1

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