ASTROSAT CZTI

Data Quality Report

Orbit 15828

Creation date: 2024-06-27T17:14:04.478266
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_143T01_9000002344_15828cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15828cztM0_level2_quad_clean.evt
Size (bytes)784,353,600136,782,720
Size748.0 MB 130.4 MB
Events in quadrant A5,490,823848,040
Events in quadrant B5,907,481860,383
Events in quadrant C5,630,225821,075
Events in quadrant D5,937,930808,177

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241624
B0249923
C0240403
D0253683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116232251.935817%
B116232462.116493%
C116232231.918610%
D116231991.712123%

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 12884 11624 13 13 0.10% 0.11%
B 12884 11624 15 15 0.12% 0.13%
C 12884 11625 0 0 0.00% 0.00%
D 12884 11625 20 20 0.16% 0.17%

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 68701 236.7 1399 1367 284.5
A 9 143 29085 97.44 1399 1367 284.5
A 13 210 14420 45.88 1399 1367 284.5
B 0 189 111493 408.23 1400 1365 269.8
B 4 216 82896 302.23 1400 1365 269.8
B 4 48 66604 241.83 1400 1365 269.8
C 14 238 202956 636.56 1347 1356 316.7
C 3 233 97708 304.23 1347 1356 316.7
C 0 207 54506 167.82 1347 1356 316.7
D 7 223 249179 733.97 1371 1333 337.7
D 1 52 231435 681.43 1371 1333 337.7
D 12 218 106783 312.28 1371 1333 337.7

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