ASTROSAT CZTI

Data Quality Report

Orbit 59091

Creation date: 2026-08-30T02:19:49.394116
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_004T02_9000006600_59091cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59091cztM0_level2_quad_clean.evt
Size (bytes)777,231,36080,907,840
Size741.2 MB 77.2 MB
Events in quadrant A3,549,411655,946
Events in quadrant B4,984,917684,497
Events in quadrant C3,064,799630,335
Events in quadrant D16,654,07714,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154134
B0194232
C0139812
D0539292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66511632.450759%
B66513054.585777%
C6651320.481131%
D6651652298.060442%

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 7676 6652 107 107 1.39% 1.61%
B 7676 6651 188 188 2.45% 2.83%
C 7676 6652 17 17 0.22% 0.26%
D 7675 6650 6061 6061 78.97% 91.14%

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 10 251 214753 1207.49 725 708 177.3
A 7 221 197604 1110.74 725 708 177.3
A 3 14 97110 543.83 725 708 177.3
B 10 128 1227754 8009.75 715 689 153.2
B 5 236 416715 2715.64 715 689 153.2
B 4 171 359351 2341.19 715 689 153.2
C 6 223 103515 519.51 717 713 197.9
C 12 252 66098 330.42 717 713 197.9
C 3 233 24459 120.0 717 713 197.9
D 12 1 15432304 421690.11 119 113 36.6
D 12 110 496005 13550.43 119 113 36.6
D 1 27 105461 2878.67 119 113 36.6

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