ASTROSAT CZTI

Data Quality Report

Orbit 51213

Creation date: 2025-03-17T23:10:59.475717
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/AS1C07_001T01_9000006454_51213cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51213cztM0_level2_quad_clean.evt
Size (bytes)2,212,799,040220,199,040
Size2.1 GB 210.0 MB
Events in quadrant A17,939,8231,409,338
Events in quadrant B12,748,2091,784,215
Events in quadrant C31,920,336866,994
Events in quadrant D17,877,2091,330,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0659952
B0506092
C01075892
D0660872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18499312816.909022%
B184998794.751608%
C18499900548.678307%
D18499264914.319693%

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 19544 18500 2605 2605 13.33% 14.08%
B 19544 18501 401 401 2.05% 2.17%
C 19543 18498 8295 8295 42.44% 44.84%
D 19544 18499 2446 2446 12.52% 13.22%

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 26 6462649 14355.85 1827 1784 450.1
A 3 95 1565126 3473.7 1827 1784 450.1
A 12 3 578886 1282.3 1827 1784 450.1
B 5 185 919744 2250.5 1929 1859 407.9
B 8 128 794733 1944.0 1929 1859 407.9
B 10 254 764654 1870.25 1929 1859 407.9
C 4 12 13540963 32644.54 1490 1475 414.8
C 9 38 2906271 7003.64 1490 1475 414.8
C 9 95 2327024 5607.04 1490 1475 414.8
D 6 42 3569717 7195.09 1792 1734 495.9
D 3 12 2238769 4511.14 1792 1734 495.9
D 7 60 820046 1650.18 1792 1734 495.9

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