ASTROSAT CZTI

Data Quality Report

Orbit 37570

Creation date: 2024-06-27T21:41:40.313002
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/AS1C07_001T11_9000005336_37570cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37570cztM0_level2_quad_clean.evt
Size (bytes)450,745,920107,280,000
Size429.9 MB 102.3 MB
Events in quadrant A3,031,580717,009
Events in quadrant B3,250,115725,627
Events in quadrant C2,917,343718,531
Events in quadrant D4,042,835667,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126203
B0136112
C0124112
D0161392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6022110.182664%
B6022781.295251%
C6022130.215875%
D60223225.347061%

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 7306 6023 2 2 0.03% 0.03%
B 7306 6023 47 47 0.64% 0.78%
C 7306 6023 9 9 0.12% 0.15%
D 7305 6022 285 285 3.90% 4.73%

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 347577 2553.71 668 654 135.9
A 12 189 31414 226.42 668 654 135.9
A 13 6 25943 186.15 668 654 135.9
B 0 213 157029 1226.17 664 646 127.5
B 5 200 146069 1140.24 664 646 127.5
B 5 255 124349 969.93 664 646 127.5
C 15 214 262365 1720.38 651 655 152.1
C 0 10 53792 349.3 651 655 152.1
C 14 254 52320 339.63 651 655 152.1
D 1 47 379884 2443.33 635 617 155.2
D 13 249 355306 2284.99 635 617 155.2
D 2 250 237982 1529.16 635 617 155.2

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