ASTROSAT CZTI

Data Quality Report

Orbit 57558

Creation date: 2026-05-19T12:12:55.534836
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_113T09_9000006574_57558cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57558cztM0_level2_quad_clean.evt
Size (bytes)650,384,640101,401,920
Size620.3 MB 96.7 MB
Events in quadrant A4,043,517698,827
Events in quadrant B3,681,164750,169
Events in quadrant C6,052,820637,224
Events in quadrant D9,719,217465,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171910
B0163300
C0232160
D0340910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74571031.381253%
B7458540.724055%
C74585607.508715%
D7458219229.391258%

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 7456 7456 86 86 1.15% 1.15%
B 7457 7457 22 22 0.30% 0.30%
C 7457 7457 537 537 7.20% 7.20%
D 7457 7457 2316 2316 31.06% 31.06%

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 14 416030 2127.02 798 776 195.2
A 10 251 335110 1712.53 798 776 195.2
A 8 249 109039 554.55 798 776 195.2
B 10 247 144391 838.72 791 761 171.2
B 4 206 115507 670.05 791 761 171.2
B 0 245 71082 410.63 791 761 171.2
C 15 224 2222117 10958.1 752 747 202.7
C 12 254 290934 1431.5 752 747 202.7
C 14 254 212685 1045.5 752 747 202.7
D 15 142 6254752 32401.37 676 645 193.0
D 2 252 271125 1401.31 676 645 193.0
D 2 249 174359 899.98 676 645 193.0

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