ASTROSAT CZTI

Data Quality Report

Orbit 20230510_A12_101T01_9000005612_level2

Creation date: 2023-05-12T10:44:44.732314
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_101T01_9000005612cztM0_level2.fits modeM0/AS1A12_101T01_9000005612cztM0_level2_quad_clean.evt
Size (bytes)321,546,240292,487,040
Size306.7 MB 278.9 MB
Events in quadrant A1,987,3341,758,906
Events in quadrant B1,852,6561,655,101
Events in quadrant C1,694,0201,386,743
Events in quadrant D1,686,3021,542,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01370
B01370
C01370
D01370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0789060
B0867610
C01416240
D0830010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07500
B07500
C07500
D07500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36583640.174945%
B3658314964.089331%
C36583817522.346445%
D365837582.072001%

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 50387 36584 0 0 0.00% 0.00%
B 50387 36537 0 0 0.00% 0.00%
C 50387 36528 0 0 0.00% 0.00%
D 50387 36578 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 9 19 1634 8.64 518 486 132.8
A 0 29 1611 8.47 518 486 132.8
A 7 110 1527 7.84 518 486 132.8
B 2 9 1620 11.8 489 468 97.6
B 2 8 1315 8.68 489 468 97.6
B 5 128 1290 8.42 489 468 97.6
C 3 203 1379 8.27 447 420 116.0
C 1 81 1332 7.86 447 420 116.0
C 3 202 1288 7.48 447 420 116.0
D 4 160 1259 6.25 481 437 131.6
D 7 3 1254 6.21 481 437 131.6
D 10 189 1251 6.19 481 437 131.6

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