ASTROSAT CZTI

Data Quality Report

Orbit 40698

Creation date: 2024-06-27T22:19:19.410889
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/AS1A12_029T02_9000005558_40698cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40698cztM0_level2_quad_clean.evt
Size (bytes)403,842,24094,334,400
Size385.1 MB 90.0 MB
Events in quadrant A3,346,461638,272
Events in quadrant B3,959,839648,676
Events in quadrant C3,800,508620,260
Events in quadrant D3,379,279533,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134133
B0157022
C0149842
D0138712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5946891.496805%
B59461963.296334%
C59461242.085436%
D59465559.334006%

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 7257 5947 71 71 0.98% 1.19%
B 7257 5947 121 121 1.67% 2.03%
C 7257 5947 111 111 1.53% 1.87%
D 7257 5947 55 55 0.76% 0.92%

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 543028 3983.62 660 646 136.2
A 6 10 201064 1472.0 660 646 136.2
A 12 189 24274 173.54 660 646 136.2
B 3 112 546711 4278.22 654 635 127.6
B 0 190 437623 3423.57 654 635 127.6
B 0 229 267096 2087.58 654 635 127.6
C 9 187 946832 6207.74 644 645 152.4
C 15 214 255389 1671.32 644 645 152.4
C 14 254 44727 289.21 644 645 152.4
D 2 250 198251 1273.37 617 598 155.2
D 12 191 178670 1147.22 617 598 155.2
D 2 249 123071 789.02 617 598 155.2

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