ASTROSAT CZTI

Data Quality Report

Orbit 37416

Creation date: 2024-06-27T21:39:42.323949
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_37416cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37416cztM0_level2_quad_clean.evt
Size (bytes)407,684,16074,756,160
Size388.8 MB 71.3 MB
Events in quadrant A3,068,088475,319
Events in quadrant B2,760,327485,710
Events in quadrant C2,876,793475,901
Events in quadrant D3,276,737450,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125056
B0117112
C0117782
D0134325

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370490.912477%
B5372310.577066%
C5372761.414743%
D53711442.681065%

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 7104 5373 26 26 0.37% 0.48%
B 7104 5373 19 19 0.27% 0.35%
C 7104 5373 68 68 0.96% 1.27%
D 7104 5373 120 120 1.69% 2.23%

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 381475 3116.9 603 592 122.2
A 10 83 287642 2349.03 603 592 122.2
A 9 143 35237 283.51 603 592 122.2
B 5 255 191309 1659.46 602 586 114.9
B 5 172 103786 897.93 602 586 114.9
B 4 232 24365 206.9 602 586 114.9
C 15 214 229049 1694.22 584 589 134.8
C 1 23 128535 948.82 584 589 134.8
C 0 10 121950 899.99 584 589 134.8
D 13 249 162056 1149.12 577 561 140.5
D 12 235 148116 1049.93 577 561 140.5
D 2 249 144652 1025.28 577 561 140.5

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