ASTROSAT CZTI

Data Quality Report

Orbit 50754

Creation date: 2025-02-14T23:25:49.783688
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/AS1C07_001T01_9000006450_50754cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50754cztM0_level2_quad_clean.evt
Size (bytes)484,557,12089,478,720
Size462.1 MB 85.3 MB
Events in quadrant A3,623,093594,399
Events in quadrant B3,265,857644,061
Events in quadrant C4,703,397552,689
Events in quadrant D5,873,617494,791

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01262
C01264
D01262

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015295467
B014224321
C018449349
D022185518

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60631201.979218%
B60671762.900940%
C60604046.666667%
D605563110.421140%

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 7317 6098 23 23 0.31% 0.38%
B 7328 6100 71 71 0.97% 1.16%
C 7333 6098 316 316 4.31% 5.18%
D 7323 6087 553 553 7.55% 9.08%

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 4 3 262376 1599.73 661 645 163.6
A 6 195 145609 886.04 661 645 163.6
A 14 254 88273 535.59 661 645 163.6
B 10 247 178748 1279.91 658 635 139.2
B 7 0 104460 746.08 658 635 139.2
B 5 172 93330 666.1 658 635 139.2
C 13 3 1025628 5885.85 638 634 174.1
C 5 10 382570 2193.2 638 634 174.1
C 12 252 139927 799.87 638 634 174.1
D 2 216 974398 5741.78 620 599 169.6
D 15 174 646816 3810.27 620 599 169.6
D 15 93 545861 3215.01 620 599 169.6

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