ASTROSAT CZTI

Data Quality Report

Orbit 39572

Creation date: 2024-06-27T22:06:17.911192
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_018T01_9000005488_39572cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39572cztM0_level2_quad_clean.evt
Size (bytes)391,628,16086,417,280
Size373.5 MB 82.4 MB
Events in quadrant A3,903,925591,712
Events in quadrant B2,334,242605,766
Events in quadrant C5,230,497517,528
Events in quadrant D2,614,495528,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153082
B0108551
C0191211
D0115711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5320460.864662%
B5320170.319549%
C532061111.484962%
D5320360.676692%

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 6961 5321 35 35 0.50% 0.66%
B 6961 5321 10 10 0.14% 0.19%
C 6961 5321 553 553 7.94% 10.39%
D 6961 5321 28 28 0.40% 0.53%

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 15 222 1131568 9491.14 576 562 119.2
A 10 83 374947 3141.75 576 562 119.2
A 2 79 53699 445.91 576 562 119.2
B 5 172 56449 504.63 571 555 110.8
B 5 255 16281 141.98 571 555 110.8
B 12 111 13896 120.45 571 555 110.8
C 9 187 2293798 18128.36 541 544 126.5
C 15 208 436387 3445.37 541 544 126.5
C 15 214 209059 1648.33 541 544 126.5
D 12 233 117859 850.7 564 547 137.9
D 1 52 93990 677.61 564 547 137.9
D 12 227 70334 506.06 564 547 137.9

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