ASTROSAT CZTI

Data Quality Report

Orbit 39650

Creation date: 2024-06-27T22:07:18.657678
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_018T01_9000005488_39650cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39650cztM0_level2_quad_clean.evt
Size (bytes)454,043,52089,277,120
Size433.0 MB 85.1 MB
Events in quadrant A4,011,308633,342
Events in quadrant B3,196,697620,000
Events in quadrant C6,145,152529,970
Events in quadrant D3,070,318573,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151063
B0126792
C0218062
D0127052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4944761.537217%
B49442825.703883%
C494496619.538835%
D4944891.800162%

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 7096 4945 44 44 0.62% 0.89%
B 7096 4945 226 226 3.18% 4.57%
C 7096 4945 877 877 12.36% 17.74%
D 7096 4945 75 75 1.06% 1.52%

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 15 222 1291165 11226.56 570 561 115.0
A 10 83 438685 3811.1 570 561 115.0
A 9 143 59385 511.69 570 561 115.0
B 5 172 911894 8664.04 559 545 105.2
B 5 255 30692 286.6 559 545 105.2
B 10 246 18225 168.08 559 545 105.2
C 15 208 2958487 24039.16 533 538 123.0
C 9 187 777230 6312.15 533 538 123.0
C 15 214 194824 1578.96 533 538 123.0
D 13 249 272232 1992.69 567 552 136.3
D 12 227 259440 1898.87 567 552 136.3
D 12 233 129847 948.34 567 552 136.3

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