ASTROSAT CZTI

Data Quality Report

Orbit 33351

Creation date: 2024-06-27T20:47:47.213080
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/AS1A10_058T15_9000004786_33351cztM0_level2.evt modeM0/AS1A10_058T15_9000004786_33351cztM0_level2_quad_clean.evt
Size (bytes)589,881,60081,478,080
Size562.6 MB 77.7 MB
Events in quadrant A2,813,386548,585
Events in quadrant B3,642,924545,447
Events in quadrant C3,724,605546,402
Events in quadrant D7,349,060478,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114383
B0142212
C0143112
D0253732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959210.423472%
B49592204.436378%
C49591132.278685%
D4959104020.971970%

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 7082 4960 8 8 0.11% 0.16%
B 7082 4960 158 158 2.23% 3.19%
C 7082 4960 67 67 0.95% 1.35%
D 7082 4959 932 932 13.16% 18.79%

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 15 169 146018 1070.62 689 679 135.8
A 13 254 7008 46.62 689 679 135.8
A 0 226 5880 38.31 689 679 135.8
B 5 172 400060 3209.68 674 662 124.4
B 15 201 206756 1656.23 674 662 124.4
B 0 219 134596 1076.33 674 662 124.4
C 10 49 664391 4461.02 659 667 148.8
C 15 214 218467 1463.87 659 667 148.8
C 0 10 124834 834.55 659 667 148.8
D 8 195 1882946 11186.83 620 608 168.3
D 1 52 1731209 10285.05 620 608 168.3
D 12 218 332152 1970.38 620 608 168.3

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