ASTROSAT CZTI

Data Quality Report

Orbit 22976

Creation date: 2024-06-27T18:48:21.275297
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/AS1A07_091T04_9000003394_22976cztM0_level2.evt modeM0/AS1A07_091T04_9000003394_22976cztM0_level2_quad_clean.evt
Size (bytes)129,847,68033,045,120
Size123.8 MB 31.5 MB
Events in quadrant A954,781216,381
Events in quadrant B958,570223,960
Events in quadrant C949,705211,444
Events in quadrant D936,058208,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040901
B041111
C041021
D041111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19131226.377418%
B19131397.266074%
C19131357.056979%
D1913924.809200%

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 2108 1916 0 0 0.00% 0.00%
B 2108 1916 1 1 0.05% 0.05%
C 2108 1916 0 0 0.00% 0.00%
D 2108 1916 1 1 0.05% 0.05%

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 13 170 3247 58.29 246 240 51.6
A 13 254 3226 57.88 246 240 51.6
A 3 137 2336 40.63 246 240 51.6
B 12 111 5917 116.09 240 233 49.0
B 11 111 5396 105.45 240 233 49.0
B 0 189 4916 95.65 240 233 49.0
C 14 238 35084 629.31 230 229 55.4
C 0 10 12268 217.36 230 229 55.4
C 0 239 4420 75.67 230 229 55.4
D 1 52 23780 398.19 237 229 59.1
D 2 234 6879 112.43 237 229 59.1
D 13 153 5512 89.32 237 229 59.1

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