ASTROSAT CZTI

Data Quality Report

Orbit 20262

Creation date: 2024-06-27T18:13:10.726147
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_175T01_9000003004_20262cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20262cztM0_level2_quad_clean.evt
Size (bytes)163,543,68032,915,520
Size156.0 MB 31.4 MB
Events in quadrant A1,447,199209,629
Events in quadrant B1,163,079224,390
Events in quadrant C1,062,741212,820
Events in quadrant D1,146,949209,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055201
B046251
C042751
D046651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19231728.944358%
B1923241.248050%
C1923321.664067%
D1923170.884035%

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 3153 1924 87 87 2.76% 4.52%
B 3153 1924 2 2 0.06% 0.10%
C 3153 1924 0 0 0.00% 0.00%
D 3153 1924 8 8 0.25% 0.42%

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 14 238 455146 8495.3 255 250 53.5
A 4 2 7747 140.01 255 250 53.5
A 0 226 2210 36.6 255 250 53.5
B 4 142 61785 1196.47 265 259 51.4
B 7 220 28619 551.51 265 259 51.4
B 15 32 15257 291.66 265 259 51.4
C 14 238 40542 654.36 256 258 61.6
C 3 233 10977 174.12 256 258 61.6
C 0 207 10744 170.33 256 258 61.6
D 1 52 68079 1080.15 256 250 62.8
D 2 120 38296 605.87 256 250 62.8
D 7 238 24104 379.87 256 250 62.8

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