ASTROSAT CZTI

Data Quality Report

Orbit 23701

Creation date: 2024-06-27T18:57:40.871062
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_054T01_9000003504_23701cztM0_level2.evt modeM0/AS1A07_054T01_9000003504_23701cztM0_level2_quad_clean.evt
Size (bytes)321,094,08087,431,040
Size306.2 MB 83.4 MB
Events in quadrant A2,103,458594,962
Events in quadrant B2,383,252593,337
Events in quadrant C2,145,698569,477
Events in quadrant D2,765,089553,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095980
B0101670
C096220
D0113380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A479010.020877%
B4790230.480167%
C4790160.334029%
D4789711.482564%

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 4790 4790 0 0 0.00% 0.00%
B 4790 4790 17 17 0.35% 0.35%
C 4790 4790 0 0 0.00% 0.00%
D 4789 4789 57 57 1.19% 1.19%

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 7555 63.18 545 533 111.1
A 3 137 4783 38.24 545 533 111.1
A 0 226 4630 36.86 545 533 111.1
B 7 219 103649 992.78 543 529 103.9
B 7 235 29516 279.07 543 529 103.9
B 15 33 25547 240.86 543 529 103.9
C 14 238 84326 681.96 524 527 122.9
C 7 247 9393 72.15 524 527 122.9
C 3 233 4409 31.59 524 527 122.9
D 1 52 583176 4557.68 526 509 127.8
D 13 174 100977 785.87 526 509 127.8
D 7 38 39860 307.81 526 509 127.8

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