ASTROSAT CZTI

Data Quality Report

Orbit 19935

Creation date: 2024-06-27T18:08:57.783035
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_160T01_9000002970_19935cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19935cztM0_level2_quad_clean.evt
Size (bytes)633,510,720101,292,480
Size604.2 MB 96.6 MB
Events in quadrant A3,788,107654,614
Events in quadrant B4,116,077652,173
Events in quadrant C5,895,751617,243
Events in quadrant D4,870,901614,320

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162012
B0172603
C0230302
D0195392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7608660.867508%
B76081992.615668%
C76085296.953207%
D76081932.536803%

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 8873 7608 0 0 0.00% 0.00%
B 8873 7610 33 33 0.37% 0.43%
C 8873 7609 193 193 2.18% 2.54%
D 8873 7609 86 86 0.97% 1.13%

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 3 1 117979 603.76 952 932 193.9
A 0 226 8313 38.07 952 932 193.9
A 3 137 7588 34.33 952 932 193.9
B 7 220 242352 1326.51 948 924 182.0
B 0 189 38276 205.23 948 924 182.0
B 0 197 35463 189.77 948 924 182.0
C 3 233 1264459 5959.37 897 903 212.0
C 4 254 911045 4292.55 897 903 212.0
C 14 238 135856 636.49 897 903 212.0
D 1 52 1270120 5542.06 924 896 229.0
D 9 1 56112 241.1 924 896 229.0
D 2 234 37048 157.86 924 896 229.0

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