ASTROSAT CZTI

Data Quality Report

Orbit 25025

Creation date: 2024-06-27T19:12:53.515653
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/AS1A07_027T11_9000003668_25025cztM0_level2.evt modeM0/AS1A07_027T11_9000003668_25025cztM0_level2_quad_clean.evt
Size (bytes)334,883,52049,340,160
Size319.4 MB 47.1 MB
Events in quadrant A1,230,080370,322
Events in quadrant B1,259,935380,319
Events in quadrant C3,405,245298,543
Events in quadrant D4,081,473270,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052601
B053351
C0118201
D0137491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241770.289615%
B2417110.455110%
C241773730.492346%
D2417130153.827058%

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 0 0 0.00% 0.00%
B 2417 2417 0 0 0.00% 0.00%
C 2417 2417 534 534 22.09% 22.09%
D 2417 2417 1159 1159 47.95% 47.95%

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 13 254 3480 48.98 318 313 64.7
A 0 226 2754 37.75 318 313 64.7
A 3 137 2673 36.5 318 313 64.7
B 0 190 7590 120.26 316 309 60.5
B 12 111 6628 104.37 316 309 60.5
B 11 111 5995 93.92 316 309 60.5
C 7 247 2286920 36272.42 268 271 63.0
C 14 238 41607 655.7 268 271 63.0
C 0 239 20915 327.47 268 271 63.0
D 7 238 2824628 44471.21 257 251 63.5
D 8 195 254222 3998.9 257 251 63.5
D 10 70 20927 325.55 257 251 63.5

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