ASTROSAT CZTI

Data Quality Report

Orbit 52449

Creation date: 2025-06-27T23:08:54.523833
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/AS1A13_037T01_9000006476_52449cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52449cztM0_level2_quad_clean.evt
Size (bytes)920,246,40082,298,880
Size877.6 MB 78.5 MB
Events in quadrant A3,180,448689,651
Events in quadrant B5,067,673695,169
Events in quadrant C10,046,296471,680
Events in quadrant D15,234,973153,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146872
B0197782
C0346512
D0499842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6914570.824414%
B69143955.713046%
C6913210230.406481%
D6914548379.302864%

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 8639 6915 15 15 0.17% 0.22%
B 8639 6914 298 298 3.45% 4.31%
C 8638 6913 2075 2075 24.02% 30.02%
D 8638 6913 5307 5307 61.44% 76.77%

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 3 45 128413 689.03 743 726 185.3
A 4 3 47389 251.81 743 726 185.3
A 10 253 20111 104.61 743 726 185.3
B 10 254 1316161 8419.47 724 698 156.2
B 4 170 244764 1562.12 724 698 156.2
B 4 171 191161 1219.04 724 698 156.2
C 15 224 2920745 16740.93 634 628 174.4
C 15 231 2629763 15072.74 634 628 174.4
C 15 248 786920 4507.79 634 628 174.4
D 6 42 12419013 105930.78 405 387 117.2
D 8 176 252834 2153.37 405 387 117.2
D 15 93 161170 1371.48 405 387 117.2

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