ASTROSAT CZTI

Data Quality Report

Orbit 39883

Creation date: 2024-06-27T22:09:52.480825
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/AS1A12_032T03_9000005502_39883cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39883cztM0_level2_quad_clean.evt
Size (bytes)366,307,20088,957,440
Size349.3 MB 84.8 MB
Events in quadrant A3,211,841599,971
Events in quadrant B2,949,732612,549
Events in quadrant C2,720,145599,209
Events in quadrant D4,274,221518,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128043
B0120882
C0109502
D0161172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5186330.636329%
B5186440.848438%
C5186240.462784%
D51864158.002314%

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 7278 5187 26 26 0.36% 0.50%
B 7278 5187 18 18 0.25% 0.35%
C 7278 5187 20 20 0.27% 0.39%
D 7278 5187 383 383 5.26% 7.38%

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 10 83 514023 4270.74 591 580 120.2
A 6 10 140791 1166.25 591 580 120.2
A 14 250 72936 601.85 591 580 120.2
B 0 221 169702 1495.77 586 570 113.1
B 0 230 131499 1157.91 586 570 113.1
B 0 183 116365 1024.07 586 570 113.1
C 15 214 224249 1653.08 579 583 135.3
C 14 254 104878 770.83 579 583 135.3
C 1 16 48293 352.62 579 583 135.3
D 1 47 948045 6752.43 564 548 140.3
D 12 227 408195 2905.13 564 548 140.3
D 2 249 186850 1327.7 564 548 140.3

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