ASTROSAT CZTI

Data Quality Report

Orbit 07726

Creation date: 2024-06-27T15:23:11.352303
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/AS1G06_064T01_9000001066_07726cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07726cztM0_level2_quad_clean.evt
Size (bytes)439,827,84095,915,520
Size419.5 MB 91.5 MB
Events in quadrant A3,124,882612,070
Events in quadrant B3,247,463630,544
Events in quadrant C3,130,402612,744
Events in quadrant D3,360,492580,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138163
B0140542
C0137332
D0144432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6730290.430906%
B6730510.757801%
C6730170.252600%
D6730330.490342%

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 8850 6732 1 1 0.01% 0.01%
B 8850 6732 6 6 0.07% 0.09%
C 8850 6732 0 0 0.00% 0.00%
D 8850 6732 12 12 0.14% 0.18%

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 15 234 19892 116.29 803 787 164.3
A 3 1 8256 45.46 803 787 164.3
A 0 226 7496 40.84 803 787 164.3
B 0 214 28470 178.64 816 798 154.9
B 4 239 17265 106.31 816 798 154.9
B 12 111 14899 91.03 816 798 154.9
C 8 128 12031 61.09 792 796 183.9
C 9 68 11693 59.25 792 796 183.9
C 8 112 6424 30.6 792 796 183.9
D 13 105 87977 455.95 785 762 191.3
D 2 152 83313 431.56 785 762 191.3
D 13 104 78193 404.8 785 762 191.3

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