ASTROSAT CZTI

Data Quality Report

Orbit 50622

Creation date: 2025-02-06T08:51:40.765548
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/AS1T05_239T01_9000006444_50622cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50622cztM0_level2_quad_clean.evt
Size (bytes)531,812,16093,813,120
Size507.2 MB 89.5 MB
Events in quadrant A3,802,278619,109
Events in quadrant B7,054,093621,924
Events in quadrant C3,517,442605,768
Events in quadrant D4,809,938542,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158432
B0253852
C0150992
D0189222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64701973.044822%
B647090013.910355%
C64701171.808346%
D64703906.027821%

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 7610 6470 163 163 2.14% 2.52%
B 7610 6470 745 745 9.79% 11.51%
C 7610 6471 90 90 1.18% 1.39%
D 7610 6470 357 357 4.69% 5.52%

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 6 161 218920 1283.07 688 673 170.1
A 9 96 217517 1274.82 688 673 170.1
A 8 38 107846 630.07 688 673 170.1
B 4 170 2498300 17647.41 668 645 141.5
B 7 0 507231 3579.33 668 645 141.5
B 3 249 245184 1727.81 668 645 141.5
C 15 199 213019 1113.06 686 679 190.8
C 13 3 152136 793.92 686 679 190.8
C 1 13 78467 407.75 686 679 190.8
D 6 42 445133 2426.92 665 644 183.1
D 8 246 319484 1740.87 665 644 183.1
D 2 165 293136 1597.01 665 644 183.1

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