ASTROSAT CZTI

Data Quality Report

Orbit 35576

Creation date: 2022-04-27T22:59:20.331462
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/AS1A11_065T21_9000005094_35576cztM0_level2.evt modeM0/AS1A11_065T21_9000005094_35576cztM0_level2_quad_clean.evt
Size (bytes)491,840,64077,584,320
Size469.1 MB 74.0 MB
Events in quadrant A2,596,883521,801
Events in quadrant B4,434,066475,696
Events in quadrant C3,082,896506,726
Events in quadrant D4,414,855466,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113633
B0168492
C0124102
D0168322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540460.111029%
B540477514.341229%
C54041252.313101%
D54044317.975574%

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 7137 5405 0 0 0.00% 0.00%
B 7137 5405 552 552 7.73% 10.21%
C 7137 5405 86 86 1.20% 1.59%
D 7137 5405 342 342 4.79% 6.33%

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 130662 1032.53 621 607 126.0
A 7 3 48175 377.65 621 607 126.0
A 13 6 18870 144.99 621 607 126.0
B 5 172 1992198 18222.7 575 560 109.3
B 0 189 47577 430.19 575 560 109.3
B 15 85 46620 421.43 575 560 109.3
C 0 10 404822 2908.21 600 606 139.0
C 15 214 223243 1601.8 600 606 139.0
C 9 187 66846 476.58 600 606 139.0
D 7 80 625571 4340.98 589 572 144.0
D 10 118 460225 3192.56 589 572 144.0
D 12 6 230946 1600.08 589 572 144.0

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