ASTROSAT CZTI

Data Quality Report

Orbit 59046

Creation date: 2026-08-28T01:59:22.412293
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_59046cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59046cztM0_level2_quad_clean.evt
Size (bytes)960,168,96072,048,960
Size915.7 MB 68.7 MB
Events in quadrant A3,221,752650,089
Events in quadrant B4,498,939641,797
Events in quadrant C11,941,930395,608
Events in quadrant D15,369,48933,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142432
B0178942
C0400632
D0501388

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6593430.652207%
B65934526.855756%
C6593277042.014258%
D6592626795.069782%

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 7583 6594 18 18 0.24% 0.27%
B 7583 6594 277 277 3.65% 4.20%
C 7583 6594 2711 2711 35.75% 41.11%
D 7581 6591 5269 5269 69.50% 79.94%

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 127169 709.5 722 704 178.2
A 3 14 115051 641.52 722 704 178.2
A 15 233 62534 346.88 722 704 178.2
B 5 236 778505 5282.86 691 665 147.2
B 4 171 541401 3672.52 691 665 147.2
B 4 236 167531 1133.3 691 665 147.2
C 15 219 8876346 52861.4 611 602 167.9
C 6 223 268430 1595.11 611 602 167.9
C 12 252 164384 975.44 611 602 167.9
D 12 1 14225060 335367.18 141 133 42.4
D 6 239 297939 7021.08 141 133 42.4
D 8 160 104219 2453.93 141 133 42.4

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