ASTROSAT CZTI

Data Quality Report

Orbit 18217

Creation date: 2024-06-27T17:46:52.651766
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/AS1T03_003T01_9000002712_18217cztM0_level2.evt modeM0/AS1T03_003T01_9000002712_18217cztM0_level2_quad_clean.evt
Size (bytes)940,158,720165,516,480
Size896.6 MB 157.8 MB
Events in quadrant A6,722,1001,028,369
Events in quadrant B6,076,6731,063,796
Events in quadrant C6,012,7601,034,568
Events in quadrant D8,795,5011,001,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286962
B0265452
C0261462
D0347342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127963893.040013%
B12796990.773679%
C127971391.086192%
D127975204.063452%

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 13876 12798 250 250 1.80% 1.95%
B 13876 12798 4 4 0.03% 0.03%
C 13877 12799 2 2 0.01% 0.02%
D 13877 12799 330 330 2.38% 2.58%

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 15 174 947175 3088.5 1501 1468 306.2
A 0 226 12834 37.12 1501 1468 306.2
A 3 137 11545 32.91 1501 1468 306.2
B 7 220 41590 137.3 1520 1478 292.2
B 12 111 35008 114.77 1520 1478 292.2
B 11 111 29810 96.98 1520 1478 292.2
C 14 238 223534 646.31 1459 1469 343.6
C 3 233 82360 235.43 1459 1469 343.6
C 0 207 22552 61.36 1459 1469 343.6
D 5 222 1644472 4593.53 1464 1420 357.7
D 7 238 875694 2444.23 1464 1420 357.7
D 1 52 471596 1314.48 1464 1420 357.7

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