ASTROSAT CZTI

Data Quality Report

Orbit 44735

Creation date: 2024-06-27T23:05:52.745977
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/AS1A13_004T11_9000006018_44735cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44735cztM0_level2_quad_clean.evt
Size (bytes)531,005,760107,772,480
Size506.4 MB 102.8 MB
Events in quadrant A5,646,299727,237
Events in quadrant B3,965,792748,963
Events in quadrant C3,200,614730,562
Events in quadrant D6,348,919611,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218732
B0159962
C0140112
D0232453

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63772483.888976%
B63772754.312373%
C63771061.662224%
D637680512.625471%

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 7582 6378 109 109 1.44% 1.71%
B 7582 6378 118 118 1.56% 1.85%
C 7582 6378 82 82 1.08% 1.29%
D 7581 6377 580 580 7.65% 9.10%

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 2024691 13612.44 720 704 148.7
A 15 223 755577 5076.94 720 704 148.7
A 13 248 31824 209.3 720 704 148.7
B 0 189 801295 5708.68 727 705 140.2
B 4 171 125032 886.53 727 705 140.2
B 0 190 81792 578.2 727 705 140.2
C 5 128 342572 2015.84 726 729 169.6
C 3 233 12160 67.41 726 729 169.6
C 1 3 7560 40.28 726 729 169.6
D 1 52 2264705 13162.11 688 667 172.0
D 12 16 364521 2115.28 688 667 172.0
D 2 249 317738 1843.31 688 667 172.0

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