ASTROSAT CZTI

Data Quality Report

Orbit 24608

Creation date: 2024-06-27T19:07:51.367919
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/AS1T03_189T01_9000003614_24608cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24608cztM0_level2_quad_clean.evt
Size (bytes)526,334,400113,417,280
Size502.0 MB 108.2 MB
Events in quadrant A3,302,810769,691
Events in quadrant B3,746,029773,409
Events in quadrant C4,542,162733,974
Events in quadrant D3,937,021733,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136471
B0151104
C0176021
D0156181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60781402.303389%
B60772323.817673%
C60773315.446766%
D60771782.929077%

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 7358 6079 10 10 0.14% 0.16%
B 7357 6078 80 80 1.09% 1.32%
C 7357 6078 45 45 0.61% 0.74%
D 7357 6077 28 28 0.38% 0.46%

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 12 96 59856 360.6 839 822 163.7
A 13 254 8344 45.95 839 822 163.7
A 6 16 7940 43.48 839 822 163.7
B 3 64 489440 3195.15 822 804 152.9
B 7 202 25170 159.33 822 804 152.9
B 12 111 18073 112.92 822 804 152.9
C 7 247 1211828 6461.96 811 816 187.4
C 14 238 128694 682.36 811 816 187.4
C 3 233 28513 147.79 811 816 187.4
D 13 104 371363 1883.55 825 804 196.7
D 8 195 157289 795.41 825 804 196.7
D 1 52 151811 767.57 825 804 196.7

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