ASTROSAT CZTI

Data Quality Report

Orbit 11219

Creation date: 2024-06-27T16:09:55.014004
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/AS1G08_075T01_9000001636_11219cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11219cztM0_level2_quad_clean.evt
Size (bytes)256,170,24029,969,280
Size244.3 MB 28.6 MB
Events in quadrant A2,276,598167,177
Events in quadrant B1,738,119172,852
Events in quadrant C1,509,065170,404
Events in quadrant D2,002,938156,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090161
B073391
C068711
D082081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3381421.242236%
B3381371.094351%
C338170.207039%
D33811043.076013%

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 4661 3382 9 9 0.19% 0.27%
B 4661 3382 6 6 0.13% 0.18%
C 4661 3382 0 0 0.00% 0.00%
D 4661 3382 94 94 2.02% 2.78%

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 8 15 505070 6311.48 393 386 80.0
A 15 174 182075 2272.17 393 386 80.0
A 14 238 54028 670.84 393 386 80.0
B 4 239 89456 1165.57 397 388 76.4
B 3 189 37264 482.57 397 388 76.4
B 0 214 25443 327.88 397 388 76.4
C 13 61 2765 26.49 386 389 89.7
C 4 254 1851 16.3 386 389 89.7
C 14 67 1096 7.88 386 389 89.7
D 10 253 305979 3366.76 373 363 90.8
D 13 249 101419 1113.26 373 363 90.8
D 8 195 81671 895.71 373 363 90.8

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