ASTROSAT CZTI

Data Quality Report

Orbit 20170727_G07_046T01_9000001408_level2

Creation date: 2025-11-15T15:34:47.438217
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/AS1G07_046T01_9000001408cztM0_level2.fits modeM0/AS1G07_046T01_9000001408cztM0_level2_quad_clean.evt
Size (bytes)400,409,280287,663,040
Size381.9 MB 274.3 MB
Events in quadrant A2,429,0401,522,460
Events in quadrant B2,371,3181,544,855
Events in quadrant C2,409,3861,477,946
Events in quadrant D2,064,0081,312,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0877080
B0876210
C0854650
D0938570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08480
C08520
D08500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0920
C0890
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A415564271.027529%
B415174221.016451%
C414762240.540071%
D415047051.698631%

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 52028 42080 0 0 0.00% 0.00%
B 52028 42060 0 0 0.00% 0.00%
C 52028 42080 0 0 0.00% 0.00%
D 52028 42013 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 2419 11.52 630 591 158.6
A 7 110 1979 8.75 630 591 158.6
A 0 30 1795 7.59 630 591 158.6
B 2 9 1991 11.17 623 594 125.0
B 3 17 1593 7.99 623 594 125.0
B 14 254 1579 7.88 623 594 125.0
C 1 81 1747 6.86 636 592 168.4
C 1 80 1745 6.85 636 592 168.4
C 12 241 1628 6.15 636 592 168.4
D 6 231 1527 6.26 588 535 158.5
D 6 83 1468 5.89 588 535 158.5
D 3 14 1461 5.84 588 535 158.5

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