ASTROSAT CZTI

Data Quality Report

Orbit 20230622_A12_093T02_9000005704_level2

Creation date: 2023-06-26T11:26:49.878071
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/AS1A12_093T02_9000005704cztM0_level2.fits modeM0/AS1A12_093T02_9000005704cztM0_level2_quad_clean.evt
Size (bytes)359,271,360382,734,720
Size342.6 MB 365.0 MB
Events in quadrant A2,180,0682,336,442
Events in quadrant B2,082,7162,359,450
Events in quadrant C2,056,1502,158,762
Events in quadrant D1,838,8462,014,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0946460
B0813920
C0935730
D0945390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08120
B08120
C08120
D08120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396393660.923333%
B39639830.209390%
C3963914243.592422%
D396399992.520245%

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 68251 39633 0 0 0.00% 0.00%
B 68251 39634 0 0 0.00% 0.00%
C 68251 39373 0 0 0.00% 0.00%
D 68251 39583 0 0 0.00% 0.00%

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 29 1783 8.79 568 533 142.2
A 7 110 1783 8.79 568 533 142.2
A 9 19 1687 8.11 568 533 142.2
B 2 9 1784 11.62 552 526 108.3
B 3 80 1496 8.96 552 526 108.3
B 3 17 1480 8.81 552 526 108.3
C 1 81 1662 8.25 542 507 140.0
C 1 80 1596 7.78 542 507 140.0
C 3 203 1562 7.53 542 507 140.0
D 7 3 1407 6.56 526 478 141.5
D 10 189 1316 5.92 526 478 141.5
D 4 160 1309 5.87 526 478 141.5

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