ASTROSAT CZTI

Data Quality Report

Orbit 40765

Creation date: 2024-06-27T22:20:11.321904
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/AS1C07_001T10_9000005566_40765cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40765cztM0_level2_quad_clean.evt
Size (bytes)509,757,12078,779,520
Size486.1 MB 75.1 MB
Events in quadrant A2,808,270596,340
Events in quadrant B2,624,394626,612
Events in quadrant C8,187,450342,343
Events in quadrant D4,864,531473,112

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114353
B0110602
C0276982
D0178592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949170.343504%
B4949591.192160%
C4949241248.737119%
D494981516.467973%

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 7072 4950 9 9 0.13% 0.18%
B 7072 4950 34 34 0.48% 0.69%
C 7071 4948 2201 2201 31.13% 44.48%
D 7072 4949 527 527 7.45% 10.65%

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 469084 4211.09 548 538 111.3
A 6 10 152229 1363.33 548 538 111.3
A 12 189 38745 343.39 548 538 111.3
B 0 229 196664 1858.97 556 542 105.5
B 4 171 123377 1164.31 556 542 105.5
B 5 255 75047 706.21 556 542 105.5
C 9 187 6321006 65718.09 420 423 96.2
C 15 214 164529 1706.29 420 423 96.2
C 0 10 47424 488.69 420 423 96.2
D 12 227 1848026 15052.36 497 483 122.7
D 13 249 649426 5287.09 497 483 122.7
D 2 249 180374 1465.61 497 483 122.7

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