ASTROSAT CZTI

Data Quality Report

Orbit 09576

Creation date: 2024-06-27T15:47:57.595594
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/AS1G07_042T01_9000001360_09576cztM0_level2.evt modeM0/AS1G07_042T01_9000001360_09576cztM0_level2_quad_clean.evt
Size (bytes)1,590,914,880318,931,200
Size1.5 GB 304.2 MB
Events in quadrant A12,856,5632,033,467
Events in quadrant B10,990,6192,050,704
Events in quadrant C10,493,9402,029,744
Events in quadrant D12,267,9471,945,682

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054158463
B048616355
C047804399
D052929368

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04762
D04764

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232393111.338268%
B232621890.812484%
C23240950.408778%
D232584641.995012%

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 25936 23380 10 10 0.04% 0.04%
B 25936 23398 18 18 0.07% 0.08%
C 25936 23375 0 0 0.00% 0.00%
D 25936 23378 308 308 1.19% 1.32%

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 1 162 873306 1561.42 2755 2705 557.6
A 1 178 452871 807.37 2755 2705 557.6
A 1 161 427831 762.46 2755 2705 557.6
B 4 80 112116 207.46 2769 2704 527.4
B 12 111 60517 109.62 2769 2704 527.4
B 11 111 49184 88.13 2769 2704 527.4
C 9 68 33430 49.68 2684 2706 618.4
C 13 61 19974 27.92 2684 2706 618.4
C 3 202 6833 6.67 2684 2706 618.4
D 1 52 1149581 1718.57 2646 2585 667.4
D 12 233 531995 793.23 2646 2585 667.4
D 13 122 202186 299.07 2646 2585 667.4

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