ASTROSAT CZTI

Data Quality Report

Orbit 44831

Creation date: 2024-06-27T23:06:59.548325
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/AS1A13_017T01_9000006028_44831cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44831cztM0_level2_quad_clean.evt
Size (bytes)1,795,541,760384,096,960
Size1.7 GB 366.3 MB
Events in quadrant A17,890,4752,600,097
Events in quadrant B12,919,0222,663,287
Events in quadrant C14,600,8022,427,188
Events in quadrant D19,152,7582,244,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740575
B0556081
C0618392
D0743081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246174361.771134%
B246206232.530463%
C2461916856.844307%
D2461916116.543726%

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 38289 24619 30 30 0.08% 0.12%
B 38290 24622 220 220 0.57% 0.89%
C 38289 24621 1281 1281 3.35% 5.20%
D 38289 24621 1299 1299 3.39% 5.28%

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 10 83 6937427 12074.79 2757 2702 574.3
A 13 248 173596 297.56 2757 2702 574.3
A 7 3 56540 93.74 2757 2702 574.3
B 5 172 626114 1151.68 2735 2646 541.4
B 4 171 323362 592.43 2735 2646 541.4
B 5 255 298211 545.97 2735 2646 541.4
C 14 254 2772677 4509.0 2619 2634 614.3
C 12 2 1262029 2050.01 2619 2634 614.3
C 15 158 127510 203.27 2619 2634 614.3
D 1 52 1608405 2437.98 2621 2539 658.7
D 2 249 1265128 1916.83 2621 2539 658.7
D 13 171 1255043 1901.51 2621 2539 658.7

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