ASTROSAT CZTI

Data Quality Report

Orbit 42053

Creation date: 2024-06-27T22:36:13.721931
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_037T03_9000005738_42053cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42053cztM0_level2_quad_clean.evt
Size (bytes)333,224,64088,320,960
Size317.8 MB 84.2 MB
Events in quadrant A3,657,090588,551
Events in quadrant B2,503,778625,313
Events in quadrant C2,448,343584,518
Events in quadrant D3,330,480520,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142033
B0106142
C0102342
D0133142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50721422.799685%
B5072270.532334%
C507240.078864%
D50722023.982650%

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 7075 5073 92 92 1.30% 1.81%
B 7075 5073 11 11 0.16% 0.22%
C 7075 5073 0 0 0.00% 0.00%
D 7075 5073 193 193 2.73% 3.80%

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 15 223 861699 7244.59 580 569 118.9
A 10 83 511637 4299.56 580 569 118.9
A 12 189 28485 234.85 580 569 118.9
B 5 255 107512 947.64 586 572 112.8
B 0 229 63885 561.04 586 572 112.8
B 3 112 15719 134.22 586 572 112.8
C 15 214 212692 1582.64 570 574 134.0
C 0 207 11421 80.93 570 574 134.0
C 13 61 3891 24.75 570 574 134.0
D 1 52 480227 3549.0 553 539 135.2
D 12 6 349828 2584.23 553 539 135.2
D 13 249 334964 2474.26 553 539 135.2

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