ASTROSAT CZTI

Data Quality Report

Orbit 48493

Creation date: 2024-09-15T19:06:24.660776
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/AS1A13_081T01_9000006428_48493cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48493cztM0_level2_quad_clean.evt
Size (bytes)446,235,840103,884,480
Size425.6 MB 99.1 MB
Events in quadrant A6,750,501675,067
Events in quadrant B2,936,751714,256
Events in quadrant C2,879,803678,124
Events in quadrant D3,426,878608,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252621
B0138781
C0140261
D0154031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67433445.101587%
B67441912.832147%
C67441161.720047%
D67442603.855279%

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 7293 6743 8 8 0.11% 0.12%
B 7294 6744 5 5 0.07% 0.07%
C 7294 6744 23 23 0.32% 0.34%
D 7294 6744 119 119 1.63% 1.76%

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 10 83 3818131 25680.31 709 692 148.7
A 12 189 171935 1151.97 709 692 148.7
A 13 254 12906 82.16 709 692 148.7
B 12 16 61707 433.2 715 692 140.8
B 5 255 24129 166.4 715 692 140.8
B 12 111 18239 124.58 715 692 140.8
C 1 3 136336 829.84 698 700 163.4
C 14 67 7811 43.51 698 700 163.4
C 3 233 7039 38.78 698 700 163.4
D 7 38 377892 2149.46 694 670 175.5
D 2 249 259695 1475.96 694 670 175.5
D 2 233 36564 204.53 694 670 175.5

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