ASTROSAT CZTI

Data Quality Report

Orbit 39712

Creation date: 2024-06-27T22:08:06.431566
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_022T01_9000005494_39712cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39712cztM0_level2_quad_clean.evt
Size (bytes)445,633,92094,775,040
Size425.0 MB 90.4 MB
Events in quadrant A3,648,016638,362
Events in quadrant B3,242,022652,963
Events in quadrant C4,667,351613,620
Events in quadrant D4,487,766559,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145443
B0136552
C0178412
D0173702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58051202.067183%
B58051372.360034%
C58052624.513351%
D58054056.976744%

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 7147 5806 98 98 1.37% 1.69%
B 7147 5806 80 80 1.12% 1.38%
C 7147 5806 216 216 3.02% 3.72%
D 7147 5806 311 311 4.35% 5.36%

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 15 174 674149 5287.51 630 618 127.4
A 10 83 459697 3603.97 630 618 127.4
A 13 248 52588 407.99 630 618 127.4
B 5 172 617722 5044.66 627 609 122.3
B 5 255 49176 397.02 627 609 122.3
B 0 190 47490 383.23 627 609 122.3
C 9 187 1094451 7718.56 609 612 141.7
C 15 208 932494 6575.72 609 612 141.7
C 15 214 237653 1672.65 609 612 141.7
D 2 250 1167553 7901.31 601 583 147.7
D 12 227 827171 5596.65 601 583 147.7
D 2 249 73442 493.31 601 583 147.7

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