ASTROSAT CZTI

Data Quality Report

Orbit 00865

Creation date: 2024-06-27T14:04:00.045497
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/AS1P01_161T02_9000000124_00865cztM0_level2.evt modeM0/AS1P01_161T02_9000000124_00865cztM0_level2_quad_clean.evt
Size (bytes)1,072,641,60089,593,920
Size1023.0 MB 85.4 MB
Events in quadrant A7,707,229580,908
Events in quadrant B8,098,051579,886
Events in quadrant C7,421,783563,215
Events in quadrant D8,830,344538,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275200
B0286110
C0266320
D0308270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6453260.402913%
B6453210.325430%
C6452170.263484%
D64521812.805332%

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 7543 6453 162 162 2.15% 2.51%
B 7543 6453 197 197 2.61% 3.05%
C 7542 6452 114 114 1.51% 1.77%
D 7542 6452 670 670 8.88% 10.38%

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 11 79 6939 10.24 2005 2017 480.5
A 10 133 6528 9.39 2005 2017 480.5
A 3 111 6083 8.46 2005 2017 480.5
B 0 220 155589 313.0 2060 2069 490.5
B 15 22 55384 108.7 2060 2069 490.5
B 0 23 12707 21.69 2060 2069 490.5
C 3 111 26428 46.84 1877 1942 522.8
C 3 79 18608 31.88 1877 1942 522.8
C 15 241 14304 23.65 1877 1942 522.8
D 12 22 1261074 2259.93 1831 1898 557.2
D 2 16 333187 594.59 1831 1898 557.2
D 13 169 216076 384.4 1831 1898 557.2

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