ASTROSAT CZTI

Data Quality Report

Orbit 11174

Creation date: 2024-06-27T16:09:21.840765
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/AS1A04_049T01_9000001632_11174cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11174cztM0_level2_quad_clean.evt
Size (bytes)252,092,16045,544,320
Size240.4 MB 43.4 MB
Events in quadrant A1,973,158296,008
Events in quadrant B2,377,892290,684
Events in quadrant C1,326,547310,100
Events in quadrant D1,763,627280,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08935
B08727
C08733
D08733

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116613889
B0139304975
C089883149
D0113374265

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2830481.696113%
B278727910.010764%
C286430.104749%
D2812642.275960%

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 7563 2955 23 23 0.30% 0.78%
B 7564 2902 188 188 2.49% 6.48%
C 7563 3000 0 0 0.00% 0.00%
D 7563 2933 47 47 0.62% 1.60%

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 5 371126 5265.46 339 332 70.4
A 8 15 259225 3676.41 339 332 70.4
A 14 238 33321 468.46 339 332 70.4
B 4 239 621726 9926.77 329 322 62.6
B 10 16 233557 3725.87 329 322 62.6
B 11 51 67292 1069.83 329 322 62.6
C 13 61 2335 25.28 339 342 78.8
C 14 234 1953 20.44 339 342 78.8
C 14 67 1217 11.1 339 342 78.8
D 9 202 150808 1921.11 323 315 78.3
D 10 253 96150 1223.37 323 315 78.3
D 13 152 74617 948.5 323 315 78.3

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