ASTROSAT CZTI

Data Quality Report

Orbit 58968

Creation date: 2026-08-21T20:37:48.878652
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_58968cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58968cztM0_level2_quad_clean.evt
Size (bytes)978,517,44090,417,600
Size933.2 MB 86.2 MB
Events in quadrant A7,217,631657,024
Events in quadrant B11,059,623455,112
Events in quadrant C4,508,919669,794
Events in quadrant D12,856,771434,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265510
B0379850
C0188290
D0433553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A748693412.476623%
B7486349346.660433%
C74863054.074272%
D7486293339.179802%

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 7486 7486 718 718 9.59% 9.59%
B 7486 7485 2188 2188 29.23% 29.23%
C 7486 7486 263 263 3.51% 3.51%
D 7486 7486 2813 2813 37.58% 37.58%

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 3690945 18549.89 801 781 198.9
A 3 14 260072 1303.42 801 781 198.9
A 4 3 49544 245.12 801 781 198.9
B 2 249 6489744 48210.43 628 604 134.6
B 4 236 960332 7130.2 628 604 134.6
B 6 255 564110 4186.51 628 604 134.6
C 12 252 1146818 5221.48 796 785 219.5
C 4 5 90000 406.47 796 785 219.5
C 11 244 37657 167.99 796 785 219.5
D 12 110 8824104 43913.01 700 668 200.9
D 2 249 863682 4295.1 700 668 200.9
D 12 248 88427 436.76 700 668 200.9

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