ASTROSAT CZTI

Data Quality Report

Orbit 52327

Creation date: 2025-07-22T18:49:32.217047
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_9000006474_52327cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52327cztM0_level2_quad_clean.evt
Size (bytes)990,118,08080,484,480
Size944.3 MB 76.8 MB
Events in quadrant A3,809,675649,467
Events in quadrant B10,726,725482,615
Events in quadrant C12,208,216355,604
Events in quadrant D9,377,321471,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160990
B0367100
C04096810
D0326364

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68571281.866706%
B6857245535.802829%
C6856341749.839557%
D6857166424.267172%

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 6857 6857 87 87 1.27% 1.27%
B 6857 6857 2033 2033 29.65% 29.65%
C 6858 6858 3028 3028 44.15% 44.15%
D 6857 6857 1610 1610 23.48% 23.48%

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 5 243 313463 1775.85 710 694 176.1
A 11 3 133744 755.44 710 694 176.1
A 4 249 120129 678.13 710 694 176.1
B 7 0 4155952 30079.71 647 623 138.1
B 10 254 2991070 21647.33 647 623 138.1
B 0 216 389664 2816.2 647 623 138.1
C 12 254 4144042 27721.76 537 533 149.5
C 15 224 3059364 20464.82 537 533 149.5
C 15 178 1048810 7013.4 537 533 149.5
D 12 17 2252678 12373.45 637 607 182.0
D 12 2 1915435 10520.55 637 607 182.0
D 15 93 673724 3698.28 637 607 182.0

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