ASTROSAT CZTI

Data Quality Report

Orbit 14863

Creation date: 2024-06-27T17:00:36.154156
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_218T01_9000002194_14863cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14863cztM0_level2_quad_clean.evt
Size (bytes)462,070,08072,624,960
Size440.7 MB 69.3 MB
Events in quadrant A3,344,009446,774
Events in quadrant B3,644,768441,044
Events in quadrant C3,361,594437,857
Events in quadrant D3,214,056431,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137093
B0147132
C0137502
D0135602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325691.090909%
B63251061.675889%
C6325570.901186%
D6325530.837945%

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 7571 6328 2 2 0.03% 0.03%
B 7571 6328 13 13 0.17% 0.21%
C 7571 6328 1 1 0.01% 0.02%
D 7571 6328 4 4 0.05% 0.06%

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 69323 409.31 841 824 167.4
A 3 1 23268 134.11 841 824 167.4
A 4 2 12691 70.91 841 824 167.4
B 0 219 134165 863.74 832 814 154.4
B 0 189 68983 441.54 832 814 154.4
B 3 64 55408 353.61 832 814 154.4
C 3 233 175107 942.12 813 820 185.0
C 6 96 9441 46.6 813 820 185.0
C 14 234 8441 41.2 813 820 185.0
D 10 70 58127 289.67 812 792 197.9
D 7 254 25696 125.82 812 792 197.9
D 2 234 22175 108.03 812 792 197.9

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