ASTROSAT CZTI

Data Quality Report

Orbit 41791

Creation date: 2024-06-27T22:32:50.944262
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_052T04_9000005700_41791cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41791cztM0_level2_quad_clean.evt
Size (bytes)2,360,903,040446,345,280
Size2.2 GB 425.7 MB
Events in quadrant A15,877,0153,127,610
Events in quadrant B13,386,9643,192,347
Events in quadrant C15,081,3433,019,148
Events in quadrant D40,836,6742,205,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0960
C0960
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0648216
B0598416
C0625306
D01411246

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A286321430.499441%
B28632980.342274%
C286326862.395921%
D28632788927.553087%

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 37437 28638 88 88 0.24% 0.31%
B 37437 28638 27 27 0.07% 0.09%
C 37437 28638 672 672 1.80% 2.35%
D 37437 28638 8807 8807 23.52% 30.75%

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 2472595 3848.71 3162 3092 641.6
A 15 223 1091222 1695.85 3162 3092 641.6
A 2 79 62321 92.31 3162 3092 641.6
B 0 186 206144 337.69 3133 3045 601.4
B 0 190 183020 299.24 3133 3045 601.4
B 0 245 180575 295.17 3133 3045 601.4
C 0 10 1929028 2736.18 3048 3064 703.9
C 15 214 1140635 1616.12 3048 3064 703.9
C 14 254 59402 80.04 3048 3064 703.9
D 12 79 27677977 39828.0 2863 2782 694.9
D 1 52 587923 842.09 2863 2782 694.9
D 13 249 548365 785.16 2863 2782 694.9

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