ASTROSAT CZTI

Data Quality Report

Orbit 17371

Creation date: 2024-06-27T17:35:36.318742
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/AS1A05_012T02_9000002566_17371cztM0_level2.evt modeM0/AS1A05_012T02_9000002566_17371cztM0_level2_quad_clean.evt
Size (bytes)644,400,00096,338,880
Size614.5 MB 91.9 MB
Events in quadrant A3,158,098654,137
Events in quadrant B3,342,841657,572
Events in quadrant C3,379,402629,980
Events in quadrant D9,197,438524,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135342
B0140782
C0141843
D0317812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6459721.114724%
B6460851.315789%
C64591271.966249%
D6459235936.522682%

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 7544 6460 0 0 0.00% 0.00%
B 7545 6461 2 2 0.03% 0.03%
C 7544 6460 0 0 0.00% 0.00%
D 7544 6460 1974 1974 26.17% 30.56%

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 0 226 7208 39.06 820 804 164.0
A 12 194 6170 32.73 820 804 164.0
A 3 137 5872 30.91 820 804 164.0
B 15 35 51579 328.04 823 803 154.8
B 0 197 34890 220.22 823 803 154.8
B 4 216 33491 211.18 823 803 154.8
C 3 233 144062 781.97 791 795 183.2
C 14 238 123354 668.94 791 795 183.2
C 8 128 10302 51.89 791 795 183.2
D 11 176 5317192 32725.29 676 658 162.5
D 13 232 800655 4924.29 676 658 162.5
D 10 70 175023 1073.28 676 658 162.5

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