ASTROSAT CZTI

Data Quality Report

Orbit 24523

Creation date: 2024-06-27T19:06:53.209061
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_183T01_9000003606_24523cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24523cztM0_level2_quad_clean.evt
Size (bytes)553,775,040126,714,240
Size528.1 MB 120.8 MB
Events in quadrant A3,696,640857,233
Events in quadrant B3,366,544878,783
Events in quadrant C3,595,469818,718
Events in quadrant D5,632,511790,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154882
B0146492
C0153262
D0216492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7080490.692090%
B7079490.692188%
C70791762.486227%
D70791191.681028%

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 7755 7081 2 2 0.03% 0.03%
B 7754 7080 0 0 0.00% 0.00%
C 7754 7080 56 56 0.72% 0.79%
D 7754 7080 50 50 0.64% 0.71%

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 14 111 439738 2607.41 844 827 168.3
A 13 254 12400 68.75 844 827 168.3
A 3 137 7806 41.46 844 827 168.3
B 7 202 19570 117.47 847 827 159.6
B 12 111 19471 116.85 847 827 159.6
B 11 111 17101 101.99 847 827 159.6
C 10 9 203973 1095.98 802 807 185.4
C 14 238 132614 711.03 802 807 185.4
C 2 16 124046 664.81 802 807 185.4
D 1 52 2367032 12165.79 806 782 194.5
D 9 1 152392 779.48 806 782 194.5
D 8 195 48617 245.94 806 782 194.5

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