ASTROSAT CZTI

Data Quality Report

Orbit 58966

Creation date: 2026-08-21T17:16:53.024771
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_004T07_9000006598_58966cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58966cztM0_level2_quad_clean.evt
Size (bytes)841,340,16081,748,800
Size802.4 MB 78.0 MB
Events in quadrant A7,336,228537,031
Events in quadrant B8,900,341477,327
Events in quadrant C3,382,019609,851
Events in quadrant D11,009,355385,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264141
B0310446
C0149621
D0373021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664137220.588235%
B6663246536.995347%
C66641692.536014%
D6664259238.895558%

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 7284 6665 1073 1073 14.73% 16.10%
B 7283 6664 1510 1510 20.73% 22.66%
C 7284 6665 90 90 1.24% 1.35%
D 7284 6665 2350 2350 32.26% 35.26%

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 14 238 4523852 26789.57 690 671 168.8
A 10 251 30000 173.7 690 671 168.8
A 15 233 25807 148.87 690 671 168.8
B 6 255 3536748 27070.13 610 588 130.6
B 2 249 2524221 19319.0 610 588 130.6
B 10 247 146562 1117.47 610 588 130.6
C 12 252 390647 1982.88 716 709 196.7
C 2 255 59109 296.97 716 709 196.7
C 3 233 46042 230.52 716 709 196.7
D 12 110 7692248 42955.57 621 592 179.1
D 2 249 398593 2222.71 621 592 179.1
D 2 31 111278 618.15 621 592 179.1

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