ASTROSAT CZTI

Data Quality Report

Orbit 38437

Creation date: 2024-06-27T21:52:44.407527
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/AS1A12_018T01_9000005386_38437cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38437cztM0_level2_quad_clean.evt
Size (bytes)363,113,28093,991,680
Size346.3 MB 89.6 MB
Events in quadrant A3,062,073635,178
Events in quadrant B3,235,973637,737
Events in quadrant C2,713,100623,983
Events in quadrant D3,988,048551,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126913
B0134752
C0116302
D0157312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5677420.739827%
B56771202.113792%
C5677120.211379%
D56773596.323763%

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 7170 5678 28 28 0.39% 0.49%
B 7170 5678 61 61 0.85% 1.07%
C 7170 5678 9 9 0.13% 0.16%
D 7170 5678 275 275 3.84% 4.84%

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 419540 3330.03 625 613 125.8
A 9 143 147575 1168.19 625 613 125.8
A 13 248 40310 315.55 625 613 125.8
B 0 183 377957 3135.25 620 604 120.4
B 5 184 236593 1960.72 620 604 120.4
B 4 232 51536 423.17 620 604 120.4
C 15 214 240947 1677.36 614 617 143.3
C 0 10 42583 292.9 614 617 143.3
C 1 23 14645 97.91 614 617 143.3
D 2 250 604660 4172.31 597 580 144.8
D 13 249 226754 1562.16 597 580 144.8
D 2 153 142372 979.34 597 580 144.8

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