ASTROSAT CZTI

Data Quality Report

Orbit 41469

Creation date: 2024-06-27T22:29:26.372943
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_014T01_9000005674_41469cztM0_level2.fits modeM0/AS1A12_014T01_9000005674_41469cztM0_level2_quad_clean.evt
Size (bytes)213,534,72053,896,320
Size203.6 MB 51.4 MB
Events in quadrant A1,733,622363,535
Events in quadrant B1,660,319364,615
Events in quadrant C1,836,503343,880
Events in quadrant D2,413,333323,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072362
B072501
C075631
D095231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332870.210337%
B3328672.013221%
C33281173.515625%
D33281083.245192%

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 4911 3329 2 2 0.04% 0.06%
B 4911 3329 38 38 0.77% 1.14%
C 4911 3329 112 112 2.28% 3.36%
D 4911 3329 102 102 2.08% 3.06%

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 315354 4151.82 362 353 75.9
A 2 79 8796 111.28 362 353 75.9
A 13 248 6552 81.7 362 353 75.9
B 0 190 95724 1355.82 356 346 70.3
B 15 35 70624 999.02 356 346 70.3
B 5 255 53625 757.37 356 346 70.3
C 0 10 322271 3915.54 345 346 82.2
C 15 214 135798 1647.49 345 346 82.2
C 12 249 12900 152.69 345 346 82.2
D 1 47 280868 3207.13 350 339 87.5
D 12 79 252156 2878.88 350 339 87.5
D 13 249 220394 2515.76 350 339 87.5

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