ASTROSAT CZTI

Data Quality Report

Orbit 20220324_T05_015T01_9000005026_level2

Creation date: 2026-01-02T06:55:56.475941
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/AS1T05_015T01_9000005026cztM0_level2.fits modeM0/AS1T05_015T01_9000005026cztM0_level2_quad_clean.evt
Size (bytes)2,031,359,0401,901,361,600
Size1.9 GB 1.8 GB
Events in quadrant A12,589,05211,268,233
Events in quadrant B12,040,35211,473,739
Events in quadrant C12,464,02211,110,513
Events in quadrant D10,179,1829,493,681

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042440
B042440
C042440
D042440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08240
B08240
C08240
D08270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05017320
B05138370
C04725890
D08640960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20781975383.627195%
B20781765983.174909%
C20781931471.514299%
D2078182110910.157445%

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 303444 207728 0 0 0.00% 0.00%
B 303444 207767 0 0 0.00% 0.00%
C 303444 207802 0 0 0.00% 0.00%
D 303443 207454 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 7 110 10337 9.09 3286 3096 796.9
A 9 19 10163 8.87 3286 3096 796.9
A 0 29 9960 8.61 3286 3096 796.9
B 2 9 10304 11.56 3195 3062 626.6
B 3 80 9146 9.71 3195 3062 626.6
B 5 128 8379 8.49 3195 3062 626.6
C 1 81 10331 8.73 3299 3110 827.3
C 1 80 10179 8.54 3299 3110 827.3
C 3 202 9807 8.1 3299 3110 827.3
D 7 3 7533 6.38 2924 2681 760.3
D 10 189 7478 6.31 2924 2681 760.3
D 6 62 7364 6.16 2924 2681 760.3

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