ASTROSAT CZTI

Data Quality Report

Orbit 33798

Creation date: 2024-06-27T20:52:53.985816
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/AS1T04_091T01_9000004822_33798cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33798cztM0_level2_quad_clean.evt
Size (bytes)631,451,52054,351,360
Size602.2 MB 51.8 MB
Events in quadrant A5,390,894307,725
Events in quadrant B3,184,509338,631
Events in quadrant C3,226,683334,974
Events in quadrant D6,975,971304,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194513
B0125712
C0130632
D0243672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5126103420.171674%
B5126881.716738%
C5126470.916894%
D512654610.651580%

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 7068 5127 767 767 10.85% 14.96%
B 7068 5127 48 48 0.68% 0.94%
C 7068 5127 35 35 0.50% 0.68%
D 7068 5127 562 562 7.95% 10.96%

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 15 237 3029958 24996.27 604 594 121.2
A 10 83 9903 76.81 604 594 121.2
A 13 6 9739 75.46 604 594 121.2
B 5 172 337758 2751.27 653 638 122.5
B 4 251 50805 409.42 653 638 122.5
B 5 255 45802 368.59 653 638 122.5
C 15 214 227271 1542.1 645 653 147.0
C 4 254 159173 1078.7 645 653 147.0
C 0 10 156601 1061.2 645 653 147.0
D 8 195 2650584 17019.98 634 618 155.7
D 12 235 471004 3021.16 634 618 155.7
D 2 250 408986 2622.83 634 618 155.7

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