ASTROSAT CZTI

Data Quality Report

Orbit 38416

Creation date: 2024-06-27T21:52:27.455844
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/AS1A12_018T01_9000005386_38416cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38416cztM0_level2_quad_clean.evt
Size (bytes)444,119,04089,579,520
Size423.5 MB 85.4 MB
Events in quadrant A2,949,007647,268
Events in quadrant B2,791,840659,513
Events in quadrant C2,599,971616,922
Events in quadrant D7,686,417416,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119213
B0116122
C0109172
D0265162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5305410.772856%
B5305571.074458%
C5305120.226202%
D5305166431.366635%

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 7127 5306 25 25 0.35% 0.47%
B 7127 5306 31 31 0.43% 0.58%
C 7127 5306 9 9 0.13% 0.17%
D 7127 5306 1584 1584 22.23% 29.85%

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 10 83 395320 3195.99 613 602 123.5
A 13 248 107405 864.77 613 602 123.5
A 9 143 41167 328.45 613 602 123.5
B 4 232 219527 1908.51 605 589 114.7
B 0 183 74103 640.83 605 589 114.7
B 4 171 44034 378.72 605 589 114.7
C 15 214 227831 1672.99 588 591 135.8
C 14 254 59035 430.28 588 591 135.8
C 0 10 15460 109.47 588 591 135.8
D 12 235 4528844 35397.53 522 507 127.9
D 12 2 386321 3015.87 522 507 127.9
D 2 250 296010 2309.92 522 507 127.9

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