ASTROSAT CZTI

Data Quality Report

Orbit 25692

Creation date: 2024-06-27T19:20:28.639450
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/AS1A09_008T03_9000003746_25692cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25692cztM0_level2_quad_clean.evt
Size (bytes)467,346,24097,655,040
Size445.7 MB 93.1 MB
Events in quadrant A3,267,134651,207
Events in quadrant B3,381,300669,370
Events in quadrant C3,439,452615,853
Events in quadrant D3,648,649592,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134800
B0137390
C0140020
D0148360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149260.422833%
B6149360.585461%
C6148681.106051%
D6148360.585556%

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 7554 6150 5 5 0.07% 0.08%
B 7554 6150 2 2 0.03% 0.03%
C 7553 6149 6 6 0.08% 0.10%
D 7553 6149 20 20 0.26% 0.33%

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 8 192 23352 135.06 836 821 166.8
A 0 13 22118 127.66 836 821 166.8
A 13 254 9618 52.73 836 821 166.8
B 0 245 62225 391.78 836 820 156.7
B 0 190 27263 168.71 836 820 156.7
B 12 111 18291 111.47 836 820 156.7
C 3 233 242456 1324.52 787 793 182.5
C 14 238 129310 704.38 787 793 182.5
C 13 61 5521 25.91 787 793 182.5
D 8 195 418902 2156.18 789 764 193.9
D 1 52 137365 704.4 789 764 193.9
D 13 104 40070 202.68 789 764 193.9

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