ASTROSAT CZTI

Data Quality Report

Orbit 03960

Creation date: 2024-06-27T14:35:41.820969
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/AS1G05_246T02_9000000504_03960cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03960cztM0_level2_quad_clean.evt
Size (bytes)1,300,858,560181,725,120
Size1.2 GB 173.3 MB
Events in quadrant A12,888,2261,091,207
Events in quadrant B8,667,5051,099,497
Events in quadrant C7,353,2861,091,318
Events in quadrant D9,355,5981,064,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502464
B0366473
C0342233
D0393513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167784592.735725%
B167781681.001311%
C16778870.518536%
D167783382.014543%

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 18753 16782 140 140 0.75% 0.83%
B 18753 16782 20 20 0.11% 0.12%
C 18753 16782 1 1 0.01% 0.01%
D 18753 16782 193 193 1.03% 1.15%

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 4 48 3976738 10137.13 1917 1877 392.1
A 0 118 603206 1533.58 1917 1877 392.1
A 13 251 571123 1451.75 1917 1877 392.1
B 15 204 454820 1202.5 1944 1895 376.7
B 4 81 192568 506.23 1944 1895 376.7
B 10 16 176887 464.6 1944 1895 376.7
C 10 65 80320 181.76 1858 1862 431.7
C 13 61 15781 32.25 1858 1862 431.7
C 14 67 10388 19.75 1858 1862 431.7
D 2 232 665303 1480.24 1848 1794 448.2
D 2 63 641733 1427.66 1848 1794 448.2
D 4 95 153470 338.38 1848 1794 448.2

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