ASTROSAT CZTI

Data Quality Report

Orbit 39257

Creation date: 2024-06-27T22:02:21.334856
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/AS1A12_093T02_9000005452_39257cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39257cztM0_level2_quad_clean.evt
Size (bytes)2,174,696,640457,859,520
Size2.0 GB 436.6 MB
Events in quadrant A14,396,2413,193,267
Events in quadrant B16,305,1183,226,945
Events in quadrant C13,162,2223,119,820
Events in quadrant D34,473,7112,397,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0604337
B0672556
C0566766
D01219786

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280041490.532067%
B280047002.499643%
C28004220.078560%
D28004590221.075561%

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 37980 28010 70 70 0.18% 0.25%
B 37980 28010 494 494 1.30% 1.76%
C 37980 28010 7 7 0.02% 0.02%
D 37980 28009 4897 4897 12.89% 17.48%

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 1823346 2880.15 3126 3063 632.0
A 13 248 504865 793.98 3126 3063 632.0
A 3 137 34012 48.97 3126 3063 632.0
B 5 172 1684063 2875.82 3072 2986 584.6
B 5 184 1618639 2763.9 3072 2986 584.6
B 5 255 485094 824.74 3072 2986 584.6
C 15 214 1237362 1749.7 3044 3065 705.4
C 12 249 29549 37.54 3044 3065 705.4
C 13 61 20489 24.7 3044 3065 705.4
D 12 235 22156626 32820.52 2771 2692 675.0
D 5 222 465203 685.2 2771 2692 675.0
D 12 227 410065 603.51 2771 2692 675.0

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