ASTROSAT CZTI

Data Quality Report

Orbit 43822

Creation date: 2024-06-27T22:56:13.037809
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_018T01_9000005906_43822cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43822cztM0_level2_quad_clean.evt
Size (bytes)2,393,752,320341,426,880
Size2.2 GB 325.6 MB
Events in quadrant A20,315,3092,302,901
Events in quadrant B17,746,3352,522,141
Events in quadrant C14,468,2732,519,119
Events in quadrant D34,399,5421,491,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0757929
B0670615
C0572025
D011729712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21804242811.135571%
B2180520049.190553%
C2180512965.943591%
D21804839938.520455%

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 26435 21805 1678 1678 6.35% 7.70%
B 26435 21806 1205 1205 4.56% 5.53%
C 26435 21805 938 938 3.55% 4.30%
D 26433 21803 7260 7260 27.47% 33.30%

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 15 223 4747018 9062.09 2565 2518 523.6
A 10 83 3147502 6006.98 2565 2518 523.6
A 14 254 2104920 4015.63 2565 2518 523.6
B 0 200 3189691 6333.56 2609 2538 503.2
B 5 235 2441537 4846.82 2609 2538 503.2
B 5 172 582408 1152.33 2609 2538 503.2
C 15 174 2724479 4543.89 2569 2586 599.0
C 15 158 711965 1184.23 2569 2586 599.0
C 14 96 276002 456.44 2569 2586 599.0
D 10 102 8858310 15546.08 2232 2163 569.7
D 12 33 7428952 13036.99 2232 2163 569.7
D 12 2 4101080 7195.24 2232 2163 569.7

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