ASTROSAT CZTI

Data Quality Report

Orbit 24642

Creation date: 2024-06-27T19:08:15.854647
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/AS1C05_012T06_9000003616_24642cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24642cztM0_level2_quad_clean.evt
Size (bytes)638,749,440152,444,160
Size609.2 MB 145.4 MB
Events in quadrant A3,789,4051,029,629
Events in quadrant B4,089,0201,046,805
Events in quadrant C5,697,923997,722
Events in quadrant D5,216,199976,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168672
B0177542
C0229854
D0210082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8148330.405007%
B81491261.546202%
C81481912.344134%
D81482633.227786%

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 8803 8150 0 0 0.00% 0.00%
B 8804 8151 27 27 0.31% 0.33%
C 8803 8150 5 5 0.06% 0.06%
D 8803 8149 178 178 2.02% 2.18%

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 13 254 13415 63.34 976 954 196.7
A 12 96 9117 41.49 976 954 196.7
A 3 137 9036 41.08 976 954 196.7
B 5 172 120157 639.87 975 951 186.3
B 0 190 64366 340.4 975 951 186.3
B 15 32 35999 188.13 975 951 186.3
C 7 247 1551148 7079.86 941 947 219.0
C 10 91 212377 965.61 941 947 219.0
C 14 238 149706 679.39 941 947 219.0
D 8 195 803433 3546.85 935 909 226.3
D 1 52 470926 2077.29 935 909 226.3
D 7 238 254837 1122.26 935 909 226.3

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