ASTROSAT CZTI

Data Quality Report

Orbit 35464

Creation date: 2022-04-21T01:46:41.374454
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_095T06_9000005078_35464cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35464cztM0_level2_quad_clean.evt
Size (bytes)401,037,12063,898,560
Size382.5 MB 60.9 MB
Events in quadrant A2,533,247405,671
Events in quadrant B2,657,462421,021
Events in quadrant C2,965,496397,012
Events in quadrant D3,652,743363,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104373
B0107312
C0117172
D0139312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494770.141500%
B4947470.950071%
C4947741.495856%
D49472986.023853%

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 6978 4948 0 0 0.00% 0.00%
B 6978 4948 25 25 0.36% 0.51%
C 6978 4948 53 53 0.76% 1.07%
D 6978 4948 318 318 4.56% 6.43%

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 119436 949.67 622 611 125.1
A 13 6 8638 64.15 622 611 125.1
A 13 254 7655 56.3 622 611 125.1
B 5 172 181551 1515.74 623 608 119.4
B 12 111 14584 117.08 623 608 119.4
B 4 232 13500 108.0 623 608 119.4
C 0 10 236092 1695.5 600 607 138.9
C 15 214 206647 1483.49 600 607 138.9
C 0 207 154865 1110.66 600 607 138.9
D 13 249 912110 6416.34 580 566 142.1
D 1 52 180348 1265.48 580 566 142.1
D 7 80 133028 932.4 580 566 142.1

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