ASTROSAT CZTI

Data Quality Report

Orbit 50563

Creation date: 2025-02-02T02:48:24.605270
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/AS1T05_239T01_9000006444_50563cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50563cztM0_level2_quad_clean.evt
Size (bytes)574,145,28096,252,480
Size547.5 MB 91.8 MB
Events in quadrant A5,409,273609,696
Events in quadrant B5,661,172664,320
Events in quadrant C5,171,008592,419
Events in quadrant D4,485,073574,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206361
B0215801
C0200941
D0180481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67925327.832744%
B67925508.097762%
C67924576.728504%
D67922433.577739%

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 7822 6792 446 446 5.70% 6.57%
B 7822 6792 408 408 5.22% 6.01%
C 7822 6792 376 376 4.81% 5.54%
D 7822 6792 207 207 2.65% 3.05%

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 3 130 687340 3956.28 698 681 173.6
A 12 250 625172 3598.09 698 681 173.6
A 8 247 226579 1301.54 698 681 173.6
B 0 229 852955 5714.68 702 679 149.1
B 1 255 644825 4319.13 702 679 149.1
B 7 0 621238 4160.97 702 679 149.1
C 15 196 434916 2268.22 693 689 191.4
C 15 178 340513 1775.1 693 689 191.4
C 13 3 221311 1152.44 693 689 191.4
D 2 249 314897 1620.31 696 673 193.9
D 7 126 288946 1486.49 696 673 193.9
D 6 42 261479 1344.86 696 673 193.9

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