ASTROSAT CZTI

Data Quality Report

Orbit 19397

Creation date: 2024-06-27T18:02:21.852917
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_208T03_9000002874_19397cztM0_level2.evt modeM0/AS1A05_208T03_9000002874_19397cztM0_level2_quad_clean.evt
Size (bytes)682,352,64095,633,280
Size650.7 MB 91.2 MB
Events in quadrant A2,856,769700,523
Events in quadrant B2,877,052701,429
Events in quadrant C2,914,191670,232
Events in quadrant D11,636,529429,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118581
B0119461
C0119242
D0384101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5605781.391615%
B5606931.658937%
C56051192.123104%
D5605416974.380018%

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 6860 5606 3 3 0.04% 0.05%
B 6861 5607 0 0 0.00% 0.00%
C 6860 5605 0 0 0.00% 0.00%
D 6859 5604 3536 3536 51.55% 63.10%

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 5 16 9661 60.25 738 723 148.4
A 13 254 7333 44.56 738 723 148.4
A 0 226 6377 38.11 738 723 148.4
B 12 111 15788 110.63 725 709 136.3
B 11 111 14338 99.99 725 709 136.3
B 0 229 13519 93.98 725 709 136.3
C 14 238 111024 673.44 708 713 163.8
C 3 233 14458 83.91 708 713 163.8
C 14 225 12789 73.72 708 713 163.8
D 10 66 9028831 69949.05 528 513 129.1
D 7 238 251104 1941.51 528 513 129.1
D 12 218 93472 720.22 528 513 129.1

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