ASTROSAT CZTI

Data Quality Report

Orbit 33746

Creation date: 2024-06-27T20:52:11.663740
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/AS1A11_037T01_9000004818_33746cztM0_level2.evt modeM0/AS1A11_037T01_9000004818_33746cztM0_level2_quad_clean.evt
Size (bytes)555,762,24090,408,960
Size530.0 MB 86.2 MB
Events in quadrant A3,520,676592,663
Events in quadrant B4,668,100579,642
Events in quadrant C3,191,633597,824
Events in quadrant D5,056,054559,988

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143993
B0178112
C0128362
D0188822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58262103.604531%
B582661410.538963%
C5826681.167182%
D58263225.526948%

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 7260 5827 223 223 3.07% 3.83%
B 7260 5827 453 453 6.24% 7.77%
C 7260 5827 69 69 0.95% 1.18%
D 7260 5827 281 281 3.87% 4.82%

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 14 4 876893 6669.97 656 643 131.4
A 15 237 88796 671.02 656 643 131.4
A 13 254 10996 78.81 656 643 131.4
B 5 172 1340099 11080.65 637 618 120.9
B 0 229 211913 1747.9 637 618 120.9
B 4 251 192753 1589.4 637 618 120.9
C 15 214 253640 1682.12 654 658 150.4
C 0 10 175996 1165.85 654 658 150.4
C 9 187 133308 882.01 654 658 150.4
D 8 195 1509301 8657.03 634 623 174.3
D 12 233 347719 1991.69 634 623 174.3
D 2 250 239970 1373.41 634 623 174.3

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