ASTROSAT CZTI

Data Quality Report

Orbit 59166

Creation date: 2026-09-04T03:53:03.758079
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/AS1T05_271T01_9000006604_59166cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59166cztM0_level2_quad_clean.evt
Size (bytes)549,426,24080,138,880
Size524.0 MB 76.4 MB
Events in quadrant A2,734,684615,602
Events in quadrant B3,143,048650,524
Events in quadrant C2,901,880593,659
Events in quadrant D11,102,827159,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012399194
B013657350
C013064258
D0380281039

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01204

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5871210.357690%
B5831871.492025%
C5860490.836177%
D5773427974.120908%

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 7487 5946 3 3 0.04% 0.05%
B 7469 5936 27 27 0.36% 0.45%
C 7487 5945 26 26 0.35% 0.44%
D 7485 5848 3254 3254 43.47% 55.64%

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 3 14 122692 748.59 664 647 163.0
A 10 251 15169 89.07 664 647 163.0
A 13 254 9671 55.35 664 647 163.0
B 4 171 258557 1840.14 657 632 140.2
B 5 248 93349 661.48 657 632 140.2
B 4 236 85834 607.87 657 632 140.2
C 12 252 122308 667.99 659 654 182.1
C 14 254 83893 457.06 659 654 182.1
C 14 96 60035 326.06 659 654 182.1
D 12 1 7825061 96745.65 284 271 80.9
D 2 31 1354475 16743.37 284 271 80.9
D 11 129 504240 6231.07 284 271 80.9

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