ASTROSAT CZTI

Data Quality Report

Orbit 20230305_A12_053T01_9000005530_level2

Creation date: 2023-03-08T11:46:58.320710
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_053T01_9000005530cztM0_level2.fits modeM0/AS1A12_053T01_9000005530cztM0_level2_quad_clean.evt
Size (bytes)600,828,480664,058,880
Size573.0 MB 633.3 MB
Events in quadrant A3,597,6844,073,368
Events in quadrant B3,485,6204,142,891
Events in quadrant C3,569,0903,992,506
Events in quadrant D2,950,4563,312,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542660
B01449250
C01461380
D01988470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013640
B013640
C013640
D013640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410
B02410
C02410
D02410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6694911041.649016%
B669495960.890230%
C669493180.474988%
D6694956278.404905%

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 90876 66946 0 0 0.00% 0.00%
B 90876 66938 0 0 0.00% 0.00%
C 90876 66949 0 0 0.00% 0.00%
D 90876 66414 0 0 0.00% 0.00%

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 9 19 2980 9.05 937 878 232.4
A 7 110 2918 8.78 937 878 232.4
A 0 29 2897 8.69 937 878 232.4
B 2 9 2934 11.36 922 878 181.0
B 3 80 2643 9.75 922 878 181.0
B 5 128 2411 8.47 922 878 181.0
C 1 81 2974 8.59 942 881 243.6
C 1 80 2963 8.55 942 881 243.6
C 3 202 2869 8.16 942 881 243.6
D 7 3 2187 6.27 843 768 226.4
D 4 160 2108 5.92 843 768 226.4
D 6 67 2090 5.84 843 768 226.4

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