ASTROSAT CZTI

Data Quality Report

Orbit 42899

Creation date: 2024-06-27T22:45:34.795510
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_143T01_9000005830_42899cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42899cztM0_level2_quad_clean.evt
Size (bytes)434,249,28094,389,120
Size414.1 MB 90.0 MB
Events in quadrant A3,400,531637,149
Events in quadrant B2,941,558659,140
Events in quadrant C4,884,125583,212
Events in quadrant D4,381,379558,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138742
B0129123
C0184412
D0172992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005841.398834%
B600570.116570%
C60055168.592839%
D60053355.578684%

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 9020 6007 59 59 0.65% 0.98%
B 9020 6007 1 1 0.01% 0.02%
C 9020 6006 506 506 5.61% 8.42%
D 9020 6006 318 318 3.53% 5.29%

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 10 83 635901 4801.07 637 623 132.3
A 15 237 246065 1854.91 637 623 132.3
A 2 79 41470 308.7 637 623 132.3
B 0 229 363408 2888.77 639 619 125.6
B 0 230 29448 229.56 639 619 125.6
B 0 245 16474 126.25 639 619 125.6
C 5 250 892960 6354.79 598 603 140.4
C 12 2 606479 4314.65 598 603 140.4
C 14 254 534604 3802.81 598 603 140.4
D 12 6 618586 4120.88 610 592 150.0
D 1 52 542571 3614.0 610 592 150.0
D 2 249 268352 1785.47 610 592 150.0

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