ASTROSAT CZTI

Data Quality Report

Orbit 37433

Creation date: 2024-06-27T21:39:55.858191
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/AS1A09_002T01_9000005322_37433cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37433cztM0_level2_quad_clean.evt
Size (bytes)425,946,24062,380,800
Size406.2 MB 59.5 MB
Events in quadrant A2,762,811386,023
Events in quadrant B3,219,784391,128
Events in quadrant C2,849,645393,539
Events in quadrant D3,723,184362,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111243
B0126432
C0112082
D0144842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5075130.256158%
B50751903.743842%
C5075420.827586%
D50751863.665025%

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 7108 5076 3 3 0.04% 0.06%
B 7108 5076 119 119 1.67% 2.34%
C 7108 5076 37 37 0.52% 0.73%
D 7108 5076 166 166 2.34% 3.27%

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 268087 2150.7 627 617 124.4
A 12 189 23380 183.03 627 617 124.4
A 13 6 12980 99.41 627 617 124.4
B 5 172 320766 2802.8 617 603 114.2
B 4 171 152897 1333.22 617 603 114.2
B 4 67 70229 609.53 617 603 114.2
C 15 214 217200 1546.24 616 622 140.1
C 0 10 160968 1144.78 616 622 140.1
C 14 254 65445 462.8 616 622 140.1
D 12 227 694003 4785.39 607 592 144.9
D 13 249 205509 1414.18 607 592 144.9
D 2 153 151561 1041.87 607 592 144.9

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