ASTROSAT CZTI

Data Quality Report

Orbit 45972

Creation date: 2024-06-27T23:18:21.859600
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_017T01_9000006148_45972cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45972cztM0_level2_quad_clean.evt
Size (bytes)2,179,382,400369,650,880
Size2.0 GB 352.5 MB
Events in quadrant A23,416,1302,453,201
Events in quadrant B25,375,3742,326,461
Events in quadrant C12,181,3352,468,656
Events in quadrant D17,844,1062,284,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0854612
B0921972
C0543412
D0699403

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2410814936.192965%
B24108374315.525966%
C241097543.127463%
D241085612.327028%

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 25438 24108 863 863 3.39% 3.58%
B 25438 24108 2606 2606 10.24% 10.81%
C 25439 24110 557 557 2.19% 2.31%
D 25438 24108 406 406 1.60% 1.68%

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 9323982 17075.68 2648 2594 545.9
A 15 223 3573467 6541.42 2648 2594 545.9
A 7 3 188399 340.37 2648 2594 545.9
B 3 112 15064158 29920.37 2551 2467 503.4
B 5 250 65787 125.79 2551 2467 503.4
B 12 111 65365 124.95 2551 2467 503.4
C 5 250 1215060 2005.84 2602 2613 604.5
C 14 254 625491 1030.47 2602 2613 604.5
C 12 250 136337 221.23 2602 2613 604.5
D 11 241 5318182 8213.33 2615 2530 647.2
D 12 2 1194728 1842.09 2615 2530 647.2
D 13 249 453154 696.27 2615 2530 647.2

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