ASTROSAT CZTI

Data Quality Report

Orbit 06921

Creation date: 2024-06-27T15:13:08.876880
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/AS1A02_005T01_9000000948_06921cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06921cztM0_level2_quad_clean.evt
Size (bytes)462,703,68085,245,120
Size441.3 MB 81.3 MB
Events in quadrant A3,256,828528,725
Events in quadrant B3,448,456532,157
Events in quadrant C3,215,047531,355
Events in quadrant D3,628,800513,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143383
B0148142
C0141322
D0154162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68201071.568915%
B68201432.096774%
C6820971.422287%
D68201592.331378%

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 8840 6822 4 4 0.05% 0.06%
B 8840 6822 13 13 0.15% 0.19%
C 8840 6822 0 0 0.00% 0.00%
D 8840 6822 43 43 0.49% 0.63%

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 8 15 66630 391.37 820 803 168.2
A 15 223 17749 100.75 820 803 168.2
A 0 226 8035 43.0 820 803 168.2
B 4 81 89451 563.38 823 804 157.3
B 4 173 46013 287.32 823 804 157.3
B 4 48 29052 179.52 823 804 157.3
C 9 247 71930 387.29 799 804 183.7
C 1 16 15021 77.41 799 804 183.7
C 13 61 6445 30.72 799 804 183.7
D 1 20 253534 1282.56 801 774 197.1
D 2 14 114805 578.62 801 774 197.1
D 2 136 73098 366.99 801 774 197.1

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