ASTROSAT CZTI

Data Quality Report

Orbit 18716

Creation date: 2024-06-27T17:53:51.909824
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_165T07_9000002796_18716cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18716cztM0_level2_quad_clean.evt
Size (bytes)263,715,84048,009,600
Size251.5 MB 45.8 MB
Events in quadrant A1,889,729305,968
Events in quadrant B1,936,665307,837
Events in quadrant C2,102,342291,930
Events in quadrant D1,807,063288,079

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079511
B081091
C087231
D078101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366890.245365%
B3668150.408942%
C3668190.517993%
D366850.136314%

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 3668 3668 0 0 0.00% 0.00%
B 3668 3668 1 1 0.03% 0.03%
C 3668 3668 0 0 0.00% 0.00%
D 3668 3668 1 1 0.03% 0.03%

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 13 254 5871 55.15 489 482 97.7
A 0 226 4222 38.27 489 482 97.7
A 12 194 3621 32.12 489 482 97.7
B 0 230 15767 167.3 488 478 91.4
B 12 111 10088 105.16 488 478 91.4
B 11 111 9038 93.67 488 478 91.4
C 3 233 233804 2216.79 460 465 105.3
C 14 238 74778 706.0 460 465 105.3
C 13 61 3217 26.14 460 465 105.3
D 7 238 32823 294.25 465 454 110.0
D 2 234 16348 144.48 465 454 110.0
D 14 34 6024 50.63 465 454 110.0

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