ASTROSAT CZTI

Data Quality Report

Orbit 20250527_C09_011T05_9000006474_level2

Creation date: 2025-07-28T16:31:44.558975
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/AS1C09_011T05_9000006474cztM0_level2.fits modeM0/AS1C09_011T05_9000006474cztM0_level2_quad_clean.evt
Size (bytes)2,172,648,9601,049,552,640
Size2.0 GB 1000.9 MB
Events in quadrant A14,343,7243,814,336
Events in quadrant B13,141,3803,653,984
Events in quadrant C6,707,9601,081,219
Events in quadrant D10,683,6742,458,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07571900
B010325440
C019557390
D013226060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061600
B061580
C061540
D061580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303075123784.084138%
B3030393534011.661865%
C30293321996272.610775%
D3030057361124.293659%

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 464726 302380 0 0 0.00% 0.00%
B 464726 302884 0 0 0.00% 0.00%
C 464725 277839 0 0 0.00% 0.00%
D 464725 300020 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 14 188 16292 10.3 3802 3538 1238.1
A 9 255 15088 9.33 3802 3538 1238.1
A 14 204 13044 7.68 3802 3538 1238.1
B 2 9 15143 14.66 3492 3323 806.4
B 2 8 13983 13.22 3492 3323 806.4
B 9 173 10897 9.39 3492 3323 806.4
C 3 203 5418 6.16 1807 1651 612.0
C 2 31 5379 6.09 1807 1651 612.0
C 7 221 5375 6.09 1807 1651 612.0
D 6 218 14190 11.08 3065 2719 1035.0
D 15 11 10350 7.37 3065 2719 1035.0
D 6 207 9824 6.86 3065 2719 1035.0

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