ASTROSAT CZTI

Data Quality Report

Orbit 20171006_G08_037T01_9000001588_level2

Creation date: 2025-11-17T13:58:44.189409
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/AS1G08_037T01_9000001588cztM0_level2.fits modeM0/AS1G08_037T01_9000001588cztM0_level2_quad_clean.evt
Size (bytes)408,303,360395,161,920
Size389.4 MB 376.9 MB
Events in quadrant A2,411,9062,282,437
Events in quadrant B2,358,4882,340,448
Events in quadrant C2,458,3752,306,884
Events in quadrant D2,037,3581,941,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01363430
B01174700
C0923180
D01239580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09260
B09200
C09200
D09220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4508927146.019206%
B4514222925.077312%
C451981820.402673%
D4490033867.541203%

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 50294 45488 0 0 0.00% 0.00%
B 50294 45521 0 0 0.00% 0.00%
C 50294 45534 0 0 0.00% 0.00%
D 50294 45149 0 0 0.00% 0.00%

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 0 29 2376 11.16 628 585 160.5
A 7 110 2032 9.01 628 585 160.5
A 0 30 1902 8.2 628 585 160.5
B 2 9 2135 12.28 622 591 125.8
B 3 17 1625 8.22 622 591 125.8
B 12 226 1579 7.86 622 591 125.8
C 12 241 1715 6.49 650 600 171.7
C 9 242 1653 6.13 650 600 171.7
C 2 191 1618 5.93 650 600 171.7
D 6 231 1505 6.22 581 526 157.4
D 3 14 1490 6.13 581 526 157.4
D 3 31 1473 6.02 581 526 157.4

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