ASTROSAT CZTI

Data Quality Report

Orbit 14903

Creation date: 2024-06-27T17:01:07.736719
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/AS1A04_011T09_9000002202_14903cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14903cztM0_level2_quad_clean.evt
Size (bytes)576,135,36099,230,400
Size549.4 MB 94.6 MB
Events in quadrant A3,369,420686,939
Events in quadrant B6,733,504494,393
Events in quadrant C3,409,058659,533
Events in quadrant D3,448,548663,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147893
B0246152
C0147722
D0151682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7181440.612728%
B7181159022.141763%
C7181280.389918%
D7181440.612728%

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 8862 7184 0 0 0.00% 0.00%
B 8862 7183 1335 1335 15.06% 18.59%
C 8862 7184 0 0 0.00% 0.00%
D 8862 7184 12 12 0.14% 0.17%

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 12 189 47547 270.56 857 841 172.6
A 11 29 12622 68.24 857 841 172.6
A 0 226 7532 38.76 857 841 172.6
B 10 16 3890803 29203.89 692 673 133.2
B 0 229 48982 362.66 692 673 133.2
B 4 173 29308 214.97 692 673 133.2
C 3 233 164531 844.65 831 834 193.8
C 13 61 5843 25.84 831 834 193.8
C 8 222 2982 11.08 831 834 193.8
D 7 254 134729 676.69 831 810 197.9
D 10 70 107323 538.21 831 810 197.9
D 13 104 35942 177.52 831 810 197.9

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