ASTROSAT CZTI

Data Quality Report

Orbit 13272

Creation date: 2024-06-27T16:38:34.826830
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_167T02_9000001974_13272cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13272cztM0_level2_quad_clean.evt
Size (bytes)342,679,68063,455,040
Size326.8 MB 60.5 MB
Events in quadrant A3,338,101404,495
Events in quadrant B2,424,489421,083
Events in quadrant C1,951,976425,886
Events in quadrant D2,402,783399,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126942
B097701
C082921
D095961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38292165.641160%
B38291594.152520%
C3829451.175242%
D38291694.413685%

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 5195 3831 155 155 2.98% 4.05%
B 5195 3831 61 61 1.17% 1.59%
C 5195 3831 1 1 0.02% 0.03%
D 5195 3831 142 142 2.73% 3.71%

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 15 239 1303981 13129.29 490 481 99.3
A 8 15 129819 1302.74 490 481 99.3
A 1 162 13532 131.45 490 481 99.3
B 4 239 394141 4166.56 498 487 94.5
B 3 64 44106 461.68 498 487 94.5
B 0 214 16186 166.16 498 487 94.5
C 6 96 32345 280.99 491 494 113.4
C 14 234 3460 26.17 491 494 113.4
C 13 61 3373 25.4 491 494 113.4
D 5 222 409404 3489.14 484 471 117.2
D 1 52 118143 1004.01 484 471 117.2
D 7 223 19406 161.56 484 471 117.2

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