ASTROSAT CZTI

Data Quality Report

Orbit 27863

Creation date: 2024-06-27T19:45:19.361444
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/AS1A10_002T05_9000004024_27863cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27863cztM0_level2_quad_clean.evt
Size (bytes)566,524,800122,624,640
Size540.3 MB 116.9 MB
Events in quadrant A3,643,655856,375
Events in quadrant B3,833,901840,214
Events in quadrant C3,759,818782,146
Events in quadrant D5,471,523773,764

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150500
B0156560
C0152730
D0208640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66201031.555891%
B66201422.145015%
C66191762.659012%
D66194266.436018%

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 7870 6620 0 0 0.00% 0.00%
B 7870 6620 4 4 0.05% 0.06%
C 7869 6619 45 45 0.57% 0.68%
D 7869 6619 323 323 4.10% 4.88%

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 13 254 10521 51.19 945 928 187.4
A 0 226 8387 39.81 945 928 187.4
A 3 137 7886 37.13 945 928 187.4
B 10 245 96972 566.93 911 893 169.5
B 0 190 52428 304.09 911 893 169.5
B 0 230 49066 284.25 911 893 169.5
C 14 238 141484 703.46 871 879 199.9
C 2 16 117712 584.53 871 879 199.9
C 15 208 66183 326.72 871 879 199.9
D 13 104 997771 4786.9 891 873 208.3
D 1 52 683444 3277.57 891 873 208.3
D 2 250 383455 1837.08 891 873 208.3

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