ASTROSAT CZTI

Data Quality Report

Orbit 32727

Creation date: 2024-06-27T20:41:17.562908
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_123T04_9000004726_32727cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32727cztM0_level2_quad_clean.evt
Size (bytes)547,056,00090,270,720
Size521.7 MB 86.1 MB
Events in quadrant A2,998,974586,353
Events in quadrant B6,139,959601,710
Events in quadrant C2,801,331602,124
Events in quadrant D4,258,681562,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122932
B0219231
C0117081
D0163621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54401512.775735%
B5440142026.102941%
C5440410.753676%
D54402404.411765%

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 7413 5441 105 105 1.42% 1.93%
B 7413 5441 1066 1066 14.38% 19.59%
C 7413 5441 38 38 0.51% 0.70%
D 7413 5441 213 213 2.87% 3.91%

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 15 249 422630 3282.89 644 631 128.5
A 15 237 41300 316.38 644 631 128.5
A 10 228 20956 158.12 644 631 128.5
B 12 1 3787792 37676.31 541 531 100.5
B 0 197 54509 536.98 541 531 100.5
B 0 219 53847 530.4 541 531 100.5
C 0 10 140096 956.25 634 640 145.8
C 0 207 63737 432.65 634 640 145.8
C 3 233 32592 219.09 634 640 145.8
D 7 80 510995 3523.73 615 604 144.8
D 8 195 386415 2663.63 615 604 144.8
D 2 250 286251 1972.1 615 604 144.8

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