ASTROSAT CZTI

Data Quality Report

Orbit 57885

Creation date: 2026-06-09T22:56:01.515088
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_125T11_9000006582_57885cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57885cztM0_level2_quad_clean.evt
Size (bytes)379,874,88089,187,840
Size362.3 MB 85.1 MB
Events in quadrant A2,623,074590,878
Events in quadrant B3,993,169601,861
Events in quadrant C3,458,540553,255
Events in quadrant D3,513,280529,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124861
B0162131
C0147101
D0143031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6084350.575279%
B60844006.574622%
C60851242.037798%
D6085791.298274%

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 7134 6085 10 10 0.14% 0.16%
B 7134 6085 214 214 3.00% 3.52%
C 7135 6086 102 102 1.43% 1.68%
D 7135 6086 72 72 1.01% 1.18%

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 8 9 69688 434.02 648 631 159.1
A 10 251 18678 113.42 648 631 159.1
A 7 64 13591 81.45 648 631 159.1
B 2 249 1198832 8942.36 625 602 134.0
B 5 185 96506 715.73 625 602 134.0
B 10 247 56568 417.67 625 602 134.0
C 15 224 542916 3216.21 616 609 168.6
C 2 12 237956 1407.61 616 609 168.6
C 14 254 119899 707.46 616 609 168.6
D 8 240 359264 2061.47 619 593 174.0
D 12 110 212953 1220.54 619 593 174.0
D 2 31 181817 1041.59 619 593 174.0

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