ASTROSAT CZTI

Data Quality Report

Orbit 15857

Creation date: 2024-06-27T17:14:24.374844
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/AS1A04_143T01_9000002344_15857cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15857cztM0_level2_quad_clean.evt
Size (bytes)883,756,800131,054,400
Size842.8 MB 125.0 MB
Events in quadrant A8,275,502773,689
Events in quadrant B6,157,456803,110
Events in quadrant C5,874,094769,478
Events in quadrant D5,611,664758,782

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328223
B0261822
C0254272
D0255462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124899037.230363%
B124891571.257106%
C124891591.273120%
D124891010.808712%

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 13770 12491 473 473 3.44% 3.79%
B 13770 12491 7 7 0.05% 0.06%
C 13770 12491 0 0 0.00% 0.00%
D 13770 12491 2 2 0.01% 0.02%

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 15 239 2661549 8987.36 1449 1417 296.0
A 9 143 29546 95.03 1449 1417 296.0
A 15 157 15966 49.15 1449 1417 296.0
B 4 173 79647 270.29 1495 1454 289.3
B 10 245 53978 181.56 1495 1454 289.3
B 4 48 39507 131.54 1495 1454 289.3
C 14 238 216714 638.31 1437 1445 337.2
C 3 233 43873 125.81 1437 1445 337.2
C 13 61 10065 25.56 1437 1445 337.2
D 2 234 50929 137.04 1465 1418 361.3
D 1 52 42197 112.87 1465 1418 361.3
D 14 226 14351 35.8 1465 1418 361.3

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