ASTROSAT CZTI

Data Quality Report

Orbit 18123

Creation date: 2024-06-27T17:45:15.105746
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_019T01_9000002688_18123cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18123cztM0_level2_quad_clean.evt
Size (bytes)210,657,60051,235,200
Size200.9 MB 48.9 MB
Events in quadrant A1,469,236356,169
Events in quadrant B1,308,336360,346
Events in quadrant C1,170,036332,438
Events in quadrant D2,266,349328,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058170
B053240
C048850
D083370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2417592.441043%
B241880.330852%
C241840.165426%
D2418913.763441%

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 2417 2417 42 42 1.74% 1.74%
B 2418 2418 4 4 0.17% 0.17%
C 2418 2418 0 0 0.00% 0.00%
D 2418 2418 111 111 4.59% 4.59%

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 15 174 265398 4220.8 307 302 62.8
A 4 2 18998 297.67 307 302 62.8
A 0 226 2811 39.95 307 302 62.8
B 7 220 98328 1672.24 301 296 58.6
B 0 189 15226 254.68 301 296 58.6
B 5 172 11588 192.62 301 296 58.6
C 14 238 45225 670.88 284 285 67.0
C 5 218 10050 145.77 284 285 67.0
C 3 233 3837 53.02 284 285 67.0
D 7 238 897712 12251.76 295 287 73.2
D 11 176 117431 1599.26 295 287 73.2
D 7 38 45343 615.11 295 287 73.2

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