ASTROSAT CZTI

Data Quality Report

Orbit 37435

Creation date: 2024-06-27T21:39:57.648414
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/AS1A09_002T01_9000005322_37435cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37435cztM0_level2_quad_clean.evt
Size (bytes)380,880,00088,686,720
Size363.2 MB 84.6 MB
Events in quadrant A2,642,849584,910
Events in quadrant B2,745,106599,423
Events in quadrant C2,832,508595,926
Events in quadrant D2,979,846560,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106343
B0110842
C0110362
D0119482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4916100.203417%
B4916581.179821%
C4916851.729048%
D4916691.403580%

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 7040 4918 4 4 0.06% 0.08%
B 7040 4918 29 29 0.41% 0.59%
C 7040 4918 48 48 0.68% 0.98%
D 7040 4918 65 65 0.92% 1.32%

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 264513 2175.38 602 591 121.3
A 12 189 30280 244.71 602 591 121.3
A 13 6 9583 74.12 602 591 121.3
B 0 189 86027 763.08 597 582 112.0
B 0 229 84816 752.26 597 582 112.0
B 5 184 54459 481.15 597 582 112.0
C 15 214 225503 1661.51 591 597 135.4
C 0 10 156068 1148.56 591 597 135.4
C 14 254 132347 973.32 591 597 135.4
D 10 253 212347 1501.52 592 576 141.0
D 2 249 161849 1143.47 592 576 141.0
D 12 227 150419 1062.43 592 576 141.0

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