ASTROSAT CZTI

Data Quality Report

Orbit 27917

Creation date: 2024-06-27T19:45:56.710625
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/AS1A10_048T06_9000004030_27917cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27917cztM0_level2_quad_clean.evt
Size (bytes)335,039,04047,808,000
Size319.5 MB 45.6 MB
Events in quadrant A2,009,660295,307
Events in quadrant B2,440,680294,561
Events in quadrant C2,016,662286,452
Events in quadrant D3,388,562269,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086780
B098940
C086990
D0128360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4271130.304378%
B4271210.491688%
C4271250.585343%
D42712495.830016%

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 4271 4271 0 0 0.00% 0.00%
B 4271 4271 4 4 0.09% 0.09%
C 4271 4271 0 0 0.00% 0.00%
D 4270 4270 252 252 5.90% 5.90%

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 15 174 7923 70.91 517 507 104.6
A 13 254 7052 62.58 517 507 104.6
A 3 137 4943 42.42 517 507 104.6
B 10 245 224923 2275.42 514 503 98.6
B 0 230 122672 1238.68 514 503 98.6
B 4 52 23008 228.18 514 503 98.6
C 14 238 80138 683.23 495 498 116.6
C 3 233 7443 59.58 495 498 116.6
C 13 61 3366 24.6 495 498 116.6
D 1 52 929780 7878.07 489 476 118.0
D 8 195 442359 3746.02 489 476 118.0
D 7 238 100136 844.86 489 476 118.0

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