ASTROSAT CZTI

Data Quality Report

Orbit 54209

Creation date: 2025-11-07T11:54:59.712391
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_004T08_9000006514_54209cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54209cztM0_level2_quad_clean.evt
Size (bytes)531,325,44092,453,760
Size506.7 MB 88.2 MB
Events in quadrant A3,229,873642,309
Events in quadrant B3,033,346704,146
Events in quadrant C3,434,753600,930
Events in quadrant D9,453,158388,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144222
B0138722
C0152172
D0326382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66411522.288812%
B6642811.219512%
C66411672.514682%
D6641237835.807860%

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 7676 6641 90 90 1.17% 1.36%
B 7677 6642 4 4 0.05% 0.06%
C 7676 6642 151 151 1.97% 2.27%
D 7676 6641 2337 2337 30.45% 35.19%

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 15 174 247476 1384.87 713 694 178.2
A 0 8 96346 536.77 713 694 178.2
A 4 3 45960 254.02 713 694 178.2
B 4 67 85579 557.89 709 683 152.2
B 7 252 28222 180.97 709 683 152.2
B 5 185 26539 169.91 709 683 152.2
C 15 215 376967 1983.12 681 674 189.7
C 12 252 120671 632.4 681 674 189.7
C 15 216 83767 437.91 681 674 189.7
D 8 176 6588414 41570.09 550 525 158.5
D 2 252 323674 2039.1 550 525 158.5
D 1 3 153261 963.78 550 525 158.5

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