ASTROSAT CZTI

Data Quality Report

Orbit 41885

Creation date: 2024-06-27T22:34:23.070822
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_101T04_9000005714_41885cztM0_level2.fits modeM0/AS1A12_101T04_9000005714_41885cztM0_level2_quad_clean.evt
Size (bytes)420,848,64093,124,800
Size401.4 MB 88.8 MB
Events in quadrant A3,807,710632,107
Events in quadrant B2,922,056651,216
Events in quadrant C3,571,116580,952
Events in quadrant D4,824,061548,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149792
B0127402
C0142142
D0183408

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58321983.395062%
B5832981.680384%
C58332945.040288%
D58323766.447188%

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 8725 5834 118 118 1.35% 2.02%
B 8725 5834 19 19 0.22% 0.33%
C 8726 5835 280 280 3.21% 4.80%
D 8725 5834 345 345 3.95% 5.91%

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 24 786977 5983.92 634 621 131.4
A 10 83 550709 4185.99 634 621 131.4
A 14 250 15786 115.4 634 621 131.4
B 4 141 203961 1648.37 634 616 123.4
B 0 190 89986 724.46 634 616 123.4
B 0 245 50104 401.16 634 616 123.4
C 0 10 813920 5688.56 601 605 143.0
C 15 214 228358 1592.97 601 605 143.0
C 0 15 179664 1252.39 601 605 143.0
D 12 79 1465145 9741.19 611 594 150.3
D 5 222 361574 2400.99 611 594 150.3
D 12 6 317465 2107.61 611 594 150.3

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