ASTROSAT CZTI

Data Quality Report

Orbit 59245

Creation date: 2026-09-09T12:58:47.405249
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_271T01_9000006604_59245cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59245cztM0_level2_quad_clean.evt
Size (bytes)626,184,000104,526,720
Size597.2 MB 99.7 MB
Events in quadrant A3,749,991720,607
Events in quadrant B3,600,582779,709
Events in quadrant C3,636,579703,628
Events in quadrant D11,587,353419,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168820
B0165370
C0166781
D0398940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7781720.925331%
B7782670.860961%
C7781370.475517%
D7781304139.082380%

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 7845 7844 51 51 0.65% 0.65%
B 7846 7845 45 45 0.57% 0.57%
C 7845 7844 23 23 0.29% 0.29%
D 7845 7842 3113 3113 39.68% 39.70%

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 15 233 374487 1839.81 823 802 203.1
A 3 245 113111 552.94 823 802 203.1
A 10 251 47723 231.01 823 802 203.1
B 10 247 120733 679.19 820 787 176.6
B 4 236 113096 635.95 820 787 176.6
B 4 201 27703 152.41 820 787 176.6
C 14 95 110635 494.21 808 802 222.2
C 12 252 92312 411.77 808 802 222.2
C 6 13 80680 359.42 808 802 222.2
D 12 110 8095930 41072.42 698 668 197.1
D 12 2 176215 890.66 698 668 197.1
D 11 129 164363 830.53 698 668 197.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct