ASTROSAT CZTI

Data Quality Report

Orbit 57344

Creation date: 2026-05-04T15:42:55.805191
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_102T01_9000006572_57344cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57344cztM0_level2_quad_clean.evt
Size (bytes)1,369,546,560271,696,320
Size1.3 GB 259.1 MB
Events in quadrant A9,542,2641,804,180
Events in quadrant B9,554,1591,931,010
Events in quadrant C13,381,8131,633,581
Events in quadrant D16,701,2211,506,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426653
B0426073
C0538753
D0631463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195944632.362968%
B195946123.123405%
C1959513486.879306%
D19595207010.563919%

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 20774 19597 72 72 0.35% 0.37%
B 20774 19597 87 87 0.42% 0.44%
C 20775 19598 771 771 3.71% 3.93%
D 20775 19597 1380 1380 6.64% 7.04%

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 0 12 1094269 2069.26 2146 2082 527.8
A 6 162 40932 73.6 2146 2082 527.8
A 4 3 29694 52.31 2146 2082 527.8
B 10 246 278190 611.62 2114 2025 451.5
B 0 213 228066 500.61 2114 2025 451.5
B 7 252 131590 286.95 2114 2025 451.5
C 15 224 3147580 5744.61 2043 2027 547.6
C 14 254 1379986 2516.52 2043 2027 547.6
C 12 250 353004 640.98 2043 2027 547.6
D 2 249 3910686 6995.59 2011 1925 558.7
D 3 224 2466265 4410.48 2011 1925 558.7
D 8 240 458212 816.63 2011 1925 558.7

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