ASTROSAT CZTI

Data Quality Report

Orbit 42914

Creation date: 2024-06-27T22:45:45.682973
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/AS1T05_143T01_9000005830_42914cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42914cztM0_level2_quad_clean.evt
Size (bytes)420,240,96097,632,000
Size400.8 MB 93.1 MB
Events in quadrant A4,019,093643,305
Events in quadrant B3,277,184670,639
Events in quadrant C2,964,820645,754
Events in quadrant D4,816,413566,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158482
B0140862
C0128962
D0188205

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61532163.510483%
B61541101.787455%
C615490.146246%
D61534747.703559%

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 8957 6155 171 171 1.91% 2.78%
B 8958 6156 78 78 0.87% 1.27%
C 8958 6156 4 4 0.04% 0.06%
D 8957 6155 433 433 4.83% 7.03%

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 15 237 734516 5414.05 652 636 135.6
A 10 83 642678 4736.53 652 636 135.6
A 2 79 114661 841.2 652 636 135.6
B 0 229 453683 3486.31 658 640 129.9
B 4 81 157583 1207.73 658 640 129.9
B 5 172 35573 268.82 658 640 129.9
C 15 214 251647 1660.94 647 651 151.1
C 8 79 73571 482.54 647 651 151.1
C 14 254 38089 247.74 647 651 151.1
D 12 6 724003 4743.09 625 607 152.5
D 1 47 716032 4690.83 625 607 152.5
D 2 249 317598 2078.42 625 607 152.5

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