ASTROSAT CZTI

Data Quality Report

Orbit 16874

Creation date: 2024-06-27T17:28:47.027221
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/AS1A05_101T05_9000002502_16874cztM0_level2.evt modeM0/AS1A05_101T05_9000002502_16874cztM0_level2_quad_clean.evt
Size (bytes)741,602,88071,640,000
Size707.2 MB 68.3 MB
Events in quadrant A3,522,634487,770
Events in quadrant B3,456,627497,614
Events in quadrant C3,076,688488,746
Events in quadrant D11,977,939254,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145342
B0142582
C0131442
D0399152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62871282.035947%
B62871372.179100%
C6287761.208844%
D6287369558.772069%

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 7408 6289 43 43 0.58% 0.68%
B 7408 6289 55 55 0.74% 0.87%
C 7408 6289 1 1 0.01% 0.02%
D 7408 6289 2889 2889 39.00% 45.94%

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 15 174 515563 3354.51 774 760 153.5
A 0 23 14595 90.15 774 760 153.5
A 9 143 7860 46.26 774 760 153.5
B 10 16 262114 1799.21 776 755 145.3
B 15 35 62929 428.01 776 755 145.3
B 4 216 34282 230.8 776 755 145.3
C 14 238 117778 669.2 756 760 174.9
C 3 233 6326 31.83 756 760 174.9
C 13 61 5289 25.9 756 760 174.9
D 1 52 9727636 74000.65 551 535 131.4
D 10 70 142727 1081.75 551 535 131.4
D 2 234 19419 143.66 551 535 131.4

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