ASTROSAT CZTI

Data Quality Report

Orbit 34319

Creation date: 2022-02-04T10:27:06.129553
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/AS1A05_012T02_9000004898_34319cztM0_level2.evt modeM0/AS1A05_012T02_9000004898_34319cztM0_level2_quad_clean.evt
Size (bytes)559,117,44097,752,960
Size533.2 MB 93.2 MB
Events in quadrant A2,607,399687,281
Events in quadrant B2,940,090696,524
Events in quadrant C2,994,916686,491
Events in quadrant D8,040,060526,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111072
B0120291
C0121641
D0275501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5179180.347557%
B5179380.733732%
C5179420.810967%
D5179181234.987449%

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 7092 5180 8 8 0.11% 0.15%
B 7092 5180 20 20 0.28% 0.39%
C 7092 5180 26 26 0.37% 0.50%
D 7092 5180 1517 1517 21.39% 29.29%

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 9 191 32985 249.49 656 644 129.6
A 10 83 29461 222.3 656 644 129.6
A 13 6 11606 84.56 656 644 129.6
B 5 172 179493 1470.75 655 639 121.6
B 4 251 80534 656.99 655 639 121.6
B 4 171 33803 272.71 655 639 121.6
C 15 214 219787 1470.84 650 657 149.0
C 0 10 98810 658.82 650 657 149.0
C 14 254 56507 374.87 650 657 149.0
D 1 52 2787465 21374.89 533 520 130.4
D 12 227 1564800 11997.48 533 520 130.4
D 8 195 640011 4904.67 533 520 130.4

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