ASTROSAT CZTI

Data Quality Report

Orbit 35145

Creation date: 2022-03-29T18:59:01.332478
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/AS1A11_037T01_9000005030_35145cztM0_level2.evt modeM0/AS1A11_037T01_9000005030_35145cztM0_level2_quad_clean.evt
Size (bytes)358,004,16076,838,400
Size341.4 MB 73.3 MB
Events in quadrant A1,951,897537,261
Events in quadrant B2,615,460528,848
Events in quadrant C2,003,009526,814
Events in quadrant D4,033,564485,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078930
B0100480
C081440
D0145100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3507150.427716%
B35071684.790419%
C350790.256630%
D35071855.275164%

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 3507 3507 5 5 0.14% 0.14%
B 3507 3507 116 116 3.31% 3.31%
C 3507 3507 9 9 0.26% 0.26%
D 3507 3507 209 209 5.96% 5.96%

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 15 169 176110 1971.88 449 442 89.1
A 10 83 30739 340.08 449 442 89.1
A 13 6 10460 112.45 449 442 89.1
B 5 236 604044 7393.07 434 425 81.6
B 5 172 156220 1908.16 434 425 81.6
B 0 189 64806 788.53 434 425 81.6
C 15 214 144369 1475.04 425 429 97.6
C 0 10 134440 1373.29 425 429 97.6
C 0 207 24070 242.26 425 429 97.6
D 8 195 1867842 18065.82 424 413 103.4
D 13 249 134575 1297.91 424 413 103.4
D 7 223 82689 795.95 424 413 103.4

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