ASTROSAT CZTI

Data Quality Report

Orbit 04688

Creation date: 2024-06-27T14:45:40.526925
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/AS1G05_235T01_9000000590_04688cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04688cztM0_level2_quad_clean.evt
Size (bytes)572,679,36083,816,640
Size546.1 MB 79.9 MB
Events in quadrant A2,844,269548,520
Events in quadrant B3,507,210552,237
Events in quadrant C4,168,288526,047
Events in quadrant D6,407,780482,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126462
B0145351
C0166461
D0232271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6135310.505297%
B61351672.722086%
C61355208.475958%
D613588714.458028%

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 7435 6136 2 2 0.03% 0.03%
B 7435 6136 83 83 1.12% 1.35%
C 7435 6136 492 492 6.62% 8.02%
D 7435 6136 856 856 11.51% 13.95%

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 8 15 38717 259.96 723 710 146.2
A 3 1 9433 59.66 723 710 146.2
A 0 226 7387 45.67 723 710 146.2
B 10 16 464335 3339.08 736 719 138.8
B 15 204 139605 1000.29 736 719 138.8
B 15 54 12958 88.15 736 719 138.8
C 14 48 1402307 8710.85 697 701 160.9
C 12 4 21994 132.33 697 701 160.9
C 9 247 13886 81.94 697 701 160.9
D 13 235 3259425 20560.99 662 642 158.5
D 2 63 409449 2579.33 662 642 158.5
D 13 25 53429 333.05 662 642 158.5

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