ASTROSAT CZTI

Data Quality Report

Orbit 54482

Creation date: 2025-10-24T01:42:59.224930
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/AS1A14_126T19_9000006518_54482cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54482cztM0_level2_quad_clean.evt
Size (bytes)465,750,72097,611,840
Size444.2 MB 93.1 MB
Events in quadrant A3,193,116647,194
Events in quadrant B4,346,792674,845
Events in quadrant C3,848,093604,936
Events in quadrant D5,318,086549,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144961
B0176991
C0165751
D0206551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6877580.843391%
B68772804.071543%
C68761852.690518%
D68764616.704479%

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 7702 6877 18 18 0.23% 0.26%
B 7702 6877 134 134 1.74% 1.95%
C 7701 6876 118 118 1.53% 1.72%
D 7701 6876 435 435 5.65% 6.33%

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 8 105550 576.89 742 722 181.7
A 4 3 49713 269.61 742 722 181.7
A 4 249 35905 193.62 742 722 181.7
B 2 249 571355 3661.46 722 695 155.9
B 0 213 318370 2038.26 722 695 155.9
B 7 0 240135 1536.29 722 695 155.9
C 12 2 252909 1277.86 717 708 197.4
C 7 46 224183 1132.31 717 708 197.4
C 12 252 174589 881.02 717 708 197.4
D 2 172 1416657 7017.02 707 673 201.8
D 8 176 782099 3872.42 707 673 201.8
D 6 239 158611 782.67 707 673 201.8

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