ASTROSAT CZTI

Data Quality Report

Orbit 36551

Creation date: 2024-06-27T21:28:18.017842
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_089T02_9000005216_36551cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36551cztM0_level2_quad_clean.evt
Size (bytes)431,199,36094,625,280
Size411.2 MB 90.2 MB
Events in quadrant A2,959,627648,358
Events in quadrant B2,953,953645,658
Events in quadrant C3,169,696627,440
Events in quadrant D3,641,251598,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117803
B0117332
C0123892
D0142562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4922320.650142%
B4922721.462820%
C49221573.189760%
D4922881.787891%

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 7075 4923 29 29 0.41% 0.59%
B 7075 4923 40 40 0.57% 0.81%
C 7075 4923 95 95 1.34% 1.93%
D 7075 4923 71 71 1.00% 1.44%

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 15 223 280199 2201.38 639 628 127.0
A 10 83 194080 1523.27 639 628 127.0
A 9 143 8090 58.76 639 628 127.0
B 5 255 253710 2160.24 620 605 117.2
B 5 172 79984 677.49 620 605 117.2
B 15 32 48656 410.11 620 605 117.2
C 0 10 585270 4226.97 600 605 138.3
C 15 214 213525 1539.35 600 605 138.3
C 6 255 26374 186.3 600 605 138.3
D 12 235 629869 4205.38 613 597 149.6
D 2 153 164707 1096.74 613 597 149.6
D 10 199 115553 768.24 613 597 149.6

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