ASTROSAT CZTI

Data Quality Report

Orbit 20210606_A10_053T37_9000004444_level2

Creation date: 2021-06-08T10:24:40.039827
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_053T37_9000004444cztM0_level2_bc.evt modeM0/AS1A10_053T37_9000004444cztM0_level2_quad_clean.evt
Size (bytes)1,772,254,080446,120,640
Size1.7 GB 425.5 MB
Events in quadrant A7,610,6432,838,726
Events in quadrant B17,212,7312,860,084
Events in quadrant C8,253,2472,783,072
Events in quadrant D18,286,6402,697,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06900
B06920
C06920
D06920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0713160
B01042400
C0747190
D01054250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339793360.988846%
B339517292.147212%
C339697892.322706%
D3394613844.077064%

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 40551 34009 13 13 0.03% 0.04%
B 40551 33972 1 1 0.00% 0.00%
C 40551 33993 12 12 0.03% 0.04%
D 40551 33962 344 344 0.85% 1.01%

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 0 13 84120 199.58 1938 1909 411.9
A 13 254 58569 137.55 1938 1909 411.9
A 15 192 21435 47.4 1938 1909 411.9
B 6 159 9134232 25174.71 1948 1908 362.8
B 0 190 147381 401.02 1948 1908 362.8
B 5 255 105196 284.73 1948 1908 362.8
C 3 233 695889 1580.49 1876 1873 439.1
C 0 10 161737 364.06 1876 1873 439.1
C 1 16 91020 203.01 1876 1873 439.1
D 8 195 9361459 21642.19 1912 1858 432.5
D 12 227 497698 1146.53 1912 1858 432.5
D 10 253 360355 828.95 1912 1858 432.5

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