ASTROSAT CZTI

Data Quality Report

Orbit 03877

Creation date: 2024-06-27T14:34:40.703518
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_083T01_9000000494_03877cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03877cztM0_level2_quad_clean.evt
Size (bytes)709,130,88083,986,560
Size676.3 MB 80.1 MB
Events in quadrant A3,588,899562,596
Events in quadrant B3,532,158571,710
Events in quadrant C10,599,691395,843
Events in quadrant D3,297,826540,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155193
B0152652
C0361972
D0149152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67571402.071925%
B6757681.006364%
C6757326548.320260%
D6757560.828770%

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 9162 6757 88 88 0.96% 1.30%
B 9162 6757 11 11 0.12% 0.16%
C 9162 6757 3343 3343 36.49% 49.47%
D 9162 6759 43 43 0.47% 0.64%

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 0 118 520417 3345.69 761 743 155.3
A 0 226 55030 349.5 761 743 155.3
A 15 234 38066 240.29 761 743 155.3
B 15 204 362213 2453.15 780 763 147.3
B 4 48 66073 443.26 780 763 147.3
B 15 54 22952 150.6 780 763 147.3
C 2 53 8234933 60432.36 592 595 136.3
C 1 16 29233 210.18 592 595 136.3
C 10 65 14566 102.53 592 595 136.3
D 1 20 168374 952.03 739 717 176.1
D 13 248 137850 778.7 739 717 176.1
D 13 239 56063 314.28 739 717 176.1

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