ASTROSAT CZTI

Data Quality Report

Orbit 36517

Creation date: 2022-07-01T09:35:04.475605
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/AS1T05_035T01_9000005214_36517cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36517cztM0_level2_quad_clean.evt
Size (bytes)423,941,76059,696,640
Size404.3 MB 56.9 MB
Events in quadrant A2,948,542359,254
Events in quadrant B3,165,397356,112
Events in quadrant C3,001,309354,122
Events in quadrant D3,330,695333,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122583
B0130562
C0121962
D0138212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5783220.380425%
B57831021.763790%
C5783380.657098%
D57831242.144216%

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 9039 5785 15 15 0.17% 0.26%
B 9039 5785 46 46 0.51% 0.80%
C 9039 5785 26 26 0.29% 0.45%
D 9039 5785 83 83 0.92% 1.43%

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 205231 1485.16 684 673 137.7
A 9 143 74597 536.71 684 673 137.7
A 15 223 11230 76.65 684 673 137.7
B 5 172 275256 2123.47 678 661 129.3
B 5 255 101191 777.41 678 661 129.3
B 15 85 42998 327.4 678 661 129.3
C 15 214 247488 1612.97 660 665 153.0
C 0 10 172446 1122.58 660 665 153.0
C 12 249 6999 41.39 660 665 153.0
D 13 249 309222 1939.84 654 637 159.1
D 2 250 130670 817.42 654 637 159.1
D 2 153 90347 563.94 654 637 159.1

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