ASTROSAT CZTI

Data Quality Report

Orbit 20170602_G07_057T04_9000001264_level2

Creation date: 2025-11-13T23:00:07.232490
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_057T04_9000001264cztM0_level2.fits modeM0/AS1G07_057T04_9000001264cztM0_level2_quad_clean.evt
Size (bytes)426,263,040406,578,240
Size406.5 MB 387.7 MB
Events in quadrant A2,556,6562,377,033
Events in quadrant B2,523,5642,439,993
Events in quadrant C2,572,1682,314,752
Events in quadrant D2,227,1982,152,398

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08940
B08980
C08940
D08960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01172550
B0940860
C0917740
D0977270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4406719134.341117%
B441499042.047611%
C441545891.333967%
D441288601.948876%

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 51093 44275 0 0 0.00% 0.00%
B 51093 44289 0 0 0.00% 0.00%
C 51093 44287 0 0 0.00% 0.00%
D 51093 44286 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 2462 10.96 666 624 167.7
A 7 110 2086 8.72 666 624 167.7
A 9 19 1943 7.87 666 624 167.7
B 2 9 2314 12.73 666 636 131.8
B 3 17 1702 8.09 666 636 131.8
B 12 226 1685 7.96 666 636 131.8
C 1 80 1830 6.79 679 629 176.8
C 1 81 1796 6.6 679 629 176.8
C 9 188 1776 6.49 679 629 176.8
D 3 14 1659 6.43 634 579 168.1
D 7 5 1627 6.23 634 579 168.1
D 6 231 1608 6.12 634 579 168.1

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