ASTROSAT CZTI

Data Quality Report

Orbit 36289

Creation date: 2022-06-15T00:34:01.546441
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_071T33_9000005186_36289cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36289cztM0_level2_quad_clean.evt
Size (bytes)562,196,16069,563,520
Size536.2 MB 66.3 MB
Events in quadrant A2,685,316454,249
Events in quadrant B3,665,225455,503
Events in quadrant C3,376,411433,150
Events in quadrant D6,955,202407,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110733
B0142562
C0130752
D0240212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5074270.532125%
B50741442.837998%
C50741623.192747%
D5074180235.514387%

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 7107 5075 10 10 0.14% 0.20%
B 7107 5075 100 100 1.41% 1.97%
C 7107 5075 153 153 2.15% 3.01%
D 7106 5074 1763 1763 24.81% 34.75%

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 10 83 182176 1437.62 629 619 126.3
A 9 143 44768 349.58 629 619 126.3
A 13 6 16412 125.05 629 619 126.3
B 4 171 343611 2882.73 621 605 119.0
B 0 155 306669 2572.26 621 605 119.0
B 5 172 214789 1800.07 621 605 119.0
C 0 10 447513 3200.44 604 612 139.6
C 0 207 302159 2159.5 604 612 139.6
C 15 214 210557 1503.5 604 612 139.6
D 12 6 4470087 37753.08 482 471 118.4
D 7 223 204299 1721.65 482 471 118.4
D 13 249 171297 1442.9 482 471 118.4

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