ASTROSAT CZTI

Data Quality Report

Orbit 14777

Creation date: 2024-06-27T16:59:33.385702
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_022T06_9000002182_14777cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14777cztM0_level2_quad_clean.evt
Size (bytes)480,000,96088,928,640
Size457.8 MB 84.8 MB
Events in quadrant A3,192,019579,333
Events in quadrant B3,705,554575,045
Events in quadrant C3,472,163562,213
Events in quadrant D3,753,603550,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130282
B0148251
C0137951
D0148491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6096510.836614%
B6096901.476378%
C6096250.410105%
D60961011.656824%

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 7417 6098 0 0 0.00% 0.00%
B 7417 6098 17 17 0.23% 0.28%
C 7417 6098 0 0 0.00% 0.00%
D 7417 6098 86 86 1.16% 1.41%

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 34511 205.93 818 802 163.7
A 11 47 7548 41.21 818 802 163.7
A 0 226 7402 40.32 818 802 163.7
B 0 219 316994 2113.32 801 784 149.6
B 3 64 89640 593.85 801 784 149.6
B 0 229 40680 266.64 801 784 149.6
C 3 233 457472 2599.31 772 779 175.7
C 13 61 5672 27.85 772 779 175.7
C 0 207 4425 20.75 772 779 175.7
D 5 222 650775 3223.62 780 763 201.6
D 2 120 43757 213.22 780 763 201.6
D 15 0 28189 136.01 780 763 201.6

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