ASTROSAT CZTI

Data Quality Report

Orbit 59414

Creation date: 2026-09-20T20:14:02.235248
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_033T01_9000006608_59414cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59414cztM0_level2_quad_clean.evt
Size (bytes)552,346,56098,110,080
Size526.8 MB 93.6 MB
Events in quadrant A8,467,490507,402
Events in quadrant B4,710,701719,215
Events in quadrant C3,419,981661,549
Events in quadrant D3,328,088616,990

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298032
B0184862
C0146942
D0143842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6685209831.383695%
B66855458.152580%
C66851632.438295%
D66851712.557966%

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 7785 6686 1604 1604 20.60% 23.99%
B 7785 6686 226 226 2.90% 3.38%
C 7785 6686 19 19 0.24% 0.28%
D 7785 6686 14 14 0.18% 0.21%

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 5318300 30980.01 708 688 171.6
A 14 254 192013 1114.65 708 688 171.6
A 3 14 71036 409.84 708 688 171.6
B 4 236 1227333 7460.77 767 739 164.4
B 5 172 125658 759.82 767 739 164.4
B 6 255 70839 426.38 767 739 164.4
C 4 5 169968 805.61 771 762 210.0
C 6 223 101000 477.24 771 762 210.0
C 12 252 43802 204.92 771 762 210.0
D 12 110 148713 682.88 773 739 216.7
D 3 12 38861 175.93 773 739 216.7
D 5 173 37766 170.88 773 739 216.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct