ASTROSAT CZTI

Data Quality Report

Orbit 38800

Creation date: 2024-06-27T21:56:36.216275
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_025T11_9000005398_38800cztM0_level2.fits modeM0/AS1A12_025T11_9000005398_38800cztM0_level2_quad_clean.evt
Size (bytes)392,414,40095,702,400
Size374.2 MB 91.3 MB
Events in quadrant A3,316,492642,971
Events in quadrant B3,025,881649,458
Events in quadrant C2,862,293632,581
Events in quadrant D4,865,414563,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132743
B0128482
C0120082
D0184532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5860380.648464%
B58601382.354949%
C586080.136519%
D58603155.375427%

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 7174 5861 38 38 0.53% 0.65%
B 7174 5861 122 122 1.70% 2.08%
C 7174 5861 4 4 0.06% 0.07%
D 7173 5860 271 271 3.78% 4.62%

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 432025 3204.02 655 642 134.6
A 13 248 235619 1745.25 655 642 134.6
A 12 16 39000 284.9 655 642 134.6
B 5 200 252852 1985.18 644 627 127.1
B 4 171 155746 1220.89 644 627 127.1
B 0 230 44057 341.82 644 627 127.1
C 15 214 261813 1736.89 641 644 150.4
C 15 208 26441 171.56 641 644 150.4
C 1 23 25690 166.57 641 644 150.4
D 12 235 776473 4929.78 631 611 157.4
D 2 249 567079 3599.3 631 611 157.4
D 5 222 435772 2764.99 631 611 157.4

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