ASTROSAT CZTI

Data Quality Report

Orbit 29479

Creation date: 2024-06-27T20:04:31.197756
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/AS1A10_102T09_9000004242_29479cztM0_level2.evt modeM0/AS1A10_102T09_9000004242_29479cztM0_level2_quad_clean.evt
Size (bytes)1,382,284,800158,146,560
Size1.3 GB 150.8 MB
Events in quadrant A6,052,4011,047,693
Events in quadrant B6,162,7471,060,247
Events in quadrant C6,459,3141,013,997
Events in quadrant D22,330,210785,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262612
B0264602
C0269492
D0752082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127411451.138058%
B127421681.318474%
C127422161.695181%
D12742464436.446398%

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 13986 12743 2 2 0.01% 0.02%
B 13987 12744 8 8 0.06% 0.06%
C 13987 12744 0 0 0.00% 0.00%
D 13987 12743 4287 4287 30.65% 33.64%

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 13 254 23787 70.61 1559 1527 315.2
A 10 253 16471 47.41 1559 1527 315.2
A 3 137 15903 45.6 1559 1527 315.2
B 12 111 37553 121.86 1543 1504 295.8
B 0 190 34718 112.27 1543 1504 295.8
B 11 111 33926 109.6 1543 1504 295.8
C 3 233 304043 861.12 1492 1500 351.3
C 14 238 239004 676.0 1492 1500 351.3
C 7 247 79254 221.31 1492 1500 351.3
D 8 195 9987450 31958.49 1311 1274 312.5
D 1 52 5431391 17377.86 1311 1274 312.5
D 7 80 681807 2177.89 1311 1274 312.5

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