ASTROSAT CZTI

Data Quality Report

Orbit 51048

Creation date: 2025-03-06T20:36:30.133249
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/AS1C07_001T02_9000006452_51048cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51048cztM0_level2_quad_clean.evt
Size (bytes)2,967,848,640367,709,760
Size2.8 GB 350.7 MB
Events in quadrant A35,577,7792,202,329
Events in quadrant B19,435,2622,693,881
Events in quadrant C26,855,7772,269,526
Events in quadrant D25,910,1622,103,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05520
B05520
C05520
D05520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01247786
B0767168
C0987156
D0961916

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27087529119.533355%
B2708617396.420291%
C27087294910.887141%
D27088346812.802717%

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 31802 27089 4548 4548 14.30% 16.79%
B 31802 27090 1018 1018 3.20% 3.76%
C 31802 27089 2569 2569 8.08% 9.48%
D 31803 27092 3215 3215 10.11% 11.87%

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 12 3 7380224 10735.01 2716 2642 687.2
A 10 253 6181212 8990.35 2716 2642 687.2
A 12 80 4518764 6571.34 2716 2642 687.2
B 4 81 1795570 3085.4 2787 2698 581.1
B 12 32 1529519 2627.55 2787 2698 581.1
B 4 171 1007403 1729.02 2787 2698 581.1
C 12 249 7405518 10221.27 2662 2641 724.3
C 15 254 1558042 2147.57 2662 2641 724.3
C 15 158 1251244 1723.97 2662 2641 724.3
D 8 176 6365455 8469.34 2649 2549 751.3
D 9 1 1961879 2607.96 2649 2549 751.3
D 15 170 1398117 1857.57 2649 2549 751.3

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