ASTROSAT CZTI

Data Quality Report

Orbit 29850

Creation date: 2024-06-27T20:08:18.935603
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/AS1T03_291T01_9000004278_29850cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29850cztM0_level2_quad_clean.evt
Size (bytes)557,781,120100,146,240
Size531.9 MB 95.5 MB
Events in quadrant A3,597,928660,342
Events in quadrant B5,466,041661,621
Events in quadrant C3,760,631624,898
Events in quadrant D3,610,297615,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148542
B0206492
C0154672
D0149492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67521261.866114%
B67521442.132701%
C67521321.954976%
D6752320.473934%

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 7632 6753 53 53 0.69% 0.78%
B 7632 6753 0 0 0.00% 0.00%
C 7632 6753 5 5 0.07% 0.07%
D 7632 6753 10 10 0.13% 0.15%

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 0 13 204384 1192.36 860 844 170.7
A 15 174 68924 398.82 860 844 170.7
A 13 254 12946 70.9 860 844 170.7
B 6 159 2041618 12658.55 856 837 161.2
B 0 190 29559 178.15 856 837 161.2
B 12 111 19205 113.93 856 837 161.2
C 3 233 426059 2242.18 816 820 189.7
C 14 238 133653 700.4 816 820 189.7
C 2 114 16360 81.94 816 820 189.7
D 8 195 319045 1631.15 824 802 195.1
D 13 138 43466 218.67 824 802 195.1
D 2 250 34706 173.77 824 802 195.1

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