ASTROSAT CZTI

Data Quality Report

Orbit 46499

Creation date: 2024-06-27T23:23:54.269929
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_068T06_9000006220_46499cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46499cztM0_level2_quad_clean.evt
Size (bytes)499,872,960107,694,720
Size476.7 MB 102.7 MB
Events in quadrant A6,186,519717,755
Events in quadrant B3,596,568736,286
Events in quadrant C2,965,099722,134
Events in quadrant D5,227,168610,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226652
B0153552
C0138572
D0202942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68071812.659027%
B68071732.541501%
C6807100.146908%
D68076209.108271%

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 7767 6808 57 57 0.73% 0.84%
B 7767 6808 96 96 1.24% 1.41%
C 7767 6808 2 2 0.03% 0.03%
D 7767 6808 550 550 7.08% 8.08%

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 3245962 20790.79 750 733 156.1
A 13 254 11802 70.91 750 733 156.1
A 9 191 10242 60.92 750 733 156.1
B 15 201 391630 2631.13 747 724 148.6
B 5 172 63537 422.78 747 724 148.6
B 5 255 44525 294.82 747 724 148.6
C 14 254 39630 220.03 746 752 176.7
C 2 14 7386 37.55 746 752 176.7
C 1 3 6572 32.94 746 752 176.7
D 13 249 1286710 7242.34 706 686 177.6
D 1 52 615737 3463.71 706 686 177.6
D 7 80 383433 2155.47 706 686 177.6

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