ASTROSAT CZTI

Data Quality Report

Orbit 16649

Creation date: 2024-06-27T17:25:31.339679
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/AS1A05_002T10_9000002460_16649cztM0_level2.evt modeM0/AS1A05_002T10_9000002460_16649cztM0_level2_quad_clean.evt
Size (bytes)441,368,64090,823,680
Size420.9 MB 86.6 MB
Events in quadrant A2,977,792587,124
Events in quadrant B3,078,585602,149
Events in quadrant C2,953,130569,710
Events in quadrant D3,926,226549,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132332
B0134041
C0129151
D0162441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6343300.472962%
B6343440.693678%
C6343530.835567%
D63432103.310736%

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 6729 6345 15 15 0.22% 0.24%
B 6729 6345 1 1 0.01% 0.02%
C 6729 6345 0 0 0.00% 0.00%
D 6729 6345 128 128 1.90% 2.02%

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 9 143 118299 799.25 734 719 147.1
A 15 223 18035 117.71 734 719 147.1
A 3 1 15059 97.48 734 719 147.1
B 15 35 72114 501.75 740 720 142.3
B 0 198 29219 200.29 740 720 142.3
B 0 189 24921 170.08 740 720 142.3
C 14 238 109154 654.59 712 716 165.7
C 3 233 64094 382.58 712 716 165.7
C 13 61 5045 26.13 712 716 165.7
D 1 52 1075858 6270.55 706 685 171.5
D 10 70 87678 507.35 706 685 171.5
D 5 222 47121 270.82 706 685 171.5

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