ASTROSAT CZTI

Data Quality Report

Orbit 41953

Creation date: 2024-06-27T22:34:56.338149
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_101T01_9000005722_41953cztM0_level2.fits modeM0/AS1A12_101T01_9000005722_41953cztM0_level2_quad_clean.evt
Size (bytes)319,265,28089,953,920
Size304.5 MB 85.8 MB
Events in quadrant A2,965,228610,638
Events in quadrant B2,597,434631,615
Events in quadrant C2,452,750598,127
Events in quadrant D3,408,938529,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117192
B0109714
C0102182
D0134752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5054571.127820%
B5053691.365525%
C505320.039580%
D50532464.868395%

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 7177 5055 50 50 0.70% 0.99%
B 7176 5054 31 31 0.43% 0.61%
C 7176 5054 1 1 0.01% 0.02%
D 7176 5054 239 239 3.33% 4.73%

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 507380 4296.82 584 574 117.9
A 2 79 191630 1619.82 584 574 117.9
A 13 248 7032 54.75 584 574 117.9
B 0 229 136685 1220.74 581 565 111.5
B 5 255 90440 806.01 581 565 111.5
B 3 112 50009 443.42 581 565 111.5
C 15 214 224529 1715.04 566 570 130.6
C 15 111 15727 116.07 566 570 130.6
C 13 61 3957 25.94 566 570 130.6
D 12 250 492884 3619.88 552 534 136.0
D 2 249 323251 2372.69 552 534 136.0
D 13 249 201729 1479.23 552 534 136.0

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