ASTROSAT CZTI

Data Quality Report

Orbit 31912

Creation date: 2024-06-27T20:34:07.177849
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_123T09_9000004654_31912cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31912cztM0_level2_quad_clean.evt
Size (bytes)1,449,034,560200,580,480
Size1.3 GB 191.3 MB
Events in quadrant A6,887,3191,376,768
Events in quadrant B12,676,2521,290,470
Events in quadrant C8,607,8301,288,723
Events in quadrant D14,781,0891,161,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312692253
B0515433746
C0372622693
D0586865363

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031224
B030717
C031026
D031022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261
B0261
C0283
D0294

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139131250.898440%
B1384210807.802341%
C138565353.861143%
D13767205814.948791%

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 23414 14013 9 9 0.04% 0.06%
B 23411 13946 485 485 2.07% 3.48%
C 23412 13968 71 71 0.30% 0.51%
D 23410 13883 1741 1741 7.44% 12.54%

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 15 174 137749 391.9 1742 1703 347.1
A 13 254 27718 74.94 1742 1703 347.1
A 13 6 20042 52.83 1742 1703 347.1
B 6 159 3754942 11756.64 1665 1620 319.3
B 4 80 884442 2765.29 1665 1620 319.3
B 5 172 458596 1431.4 1665 1620 319.3
C 0 10 911916 2362.68 1643 1648 385.3
C 3 233 851690 2206.36 1643 1648 385.3
C 14 238 295689 763.21 1643 1648 385.3
D 12 33 5767787 15272.68 1580 1538 377.6
D 8 195 2136558 5654.88 1580 1538 377.6
D 7 238 226746 596.49 1580 1538 377.6

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