ASTROSAT CZTI

Data Quality Report

Orbit 26439

Creation date: 2024-06-27T19:29:01.953136
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/AS1A09_108T02_9000003822_26439cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26439cztM0_level2_quad_clean.evt
Size (bytes)912,490,560135,017,280
Size870.2 MB 128.8 MB
Events in quadrant A5,805,897828,056
Events in quadrant B5,673,690847,690
Events in quadrant C6,826,416804,766
Events in quadrant D8,522,224783,287

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247970
B0242080
C0276830
D0331370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119191311.099085%
B11920980.822148%
C119203923.288591%
D119206895.780201%

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 13314 11919 34 34 0.26% 0.29%
B 13315 11920 1 1 0.01% 0.01%
C 13315 11921 158 158 1.19% 1.33%
D 13315 11921 530 530 3.98% 4.45%

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 0 13 252428 872.38 1435 1407 287.7
A 13 254 17198 54.88 1435 1407 287.7
A 3 137 13822 43.14 1435 1407 287.7
B 12 111 34538 119.59 1430 1390 277.2
B 11 111 31154 107.38 1430 1390 277.2
B 14 111 27715 94.98 1430 1390 277.2
C 4 254 1055128 3329.99 1364 1371 316.4
C 14 238 216850 680.94 1364 1371 316.4
C 3 233 165696 519.28 1364 1371 316.4
D 1 52 1230220 3778.47 1361 1325 325.2
D 11 176 1034002 3175.16 1361 1325 325.2
D 7 80 882988 2710.84 1361 1325 325.2

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