ASTROSAT CZTI

Data Quality Report

Orbit 54649

Creation date: 2025-11-04T07:05:34.982309
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_066T07_9000006522_54649cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54649cztM0_level2_quad_clean.evt
Size (bytes)520,272,00097,992,000
Size496.2 MB 93.5 MB
Events in quadrant A3,801,052659,056
Events in quadrant B3,189,725712,178
Events in quadrant C3,636,916620,092
Events in quadrant D8,103,587502,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160342
B0145542
C0159692
D0288912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67891281.885403%
B6789751.104728%
C67891602.356754%
D6789132119.457947%

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 7684 6790 64 64 0.83% 0.94%
B 7684 6790 18 18 0.23% 0.27%
C 7684 6790 79 79 1.03% 1.16%
D 7684 6790 1035 1035 13.47% 15.24%

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 7 190 598181 3262.5 744 727 183.1
A 11 3 187506 1019.94 744 727 183.1
A 0 8 40884 219.28 744 727 183.1
B 10 247 113069 697.16 744 716 161.2
B 5 172 48031 293.59 744 716 161.2
B 4 170 32608 197.89 744 716 161.2
C 6 223 270416 1364.35 719 712 197.7
C 13 3 205412 1035.51 719 712 197.7
C 4 5 193823 976.89 719 712 197.7
D 2 62 3858519 19536.5 687 656 197.5
D 14 52 429542 2171.91 687 656 197.5
D 15 94 324392 1639.42 687 656 197.5

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