ASTROSAT CZTI

Data Quality Report

Orbit 59311

Creation date: 2026-09-13T21:41:24.747087
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_021T06_9000006606_59311cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59311cztM0_level2_quad_clean.evt
Size (bytes)619,369,92088,200,000
Size590.7 MB 84.1 MB
Events in quadrant A2,932,407653,734
Events in quadrant B4,298,399659,216
Events in quadrant C3,211,179607,721
Events in quadrant D11,997,234311,955

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131881
B0170311
C0139754
D0399951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279631.003344%
B62805458.678344%
C6279951.512980%
D6279326752.030578%

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 7434 6279 6 6 0.08% 0.10%
B 7435 6280 407 407 5.47% 6.48%
C 7434 6279 40 40 0.54% 0.64%
D 7434 6279 3379 3379 45.45% 53.81%

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 7 64 93731 535.25 702 685 173.8
A 10 0 73305 417.75 702 685 173.8
A 14 238 17843 98.7 702 685 173.8
B 4 236 1219685 8684.68 667 645 140.4
B 5 236 217160 1542.5 667 645 140.4
B 10 247 70779 499.65 667 645 140.4
C 9 38 273101 1464.59 678 671 186.0
C 4 5 88224 470.69 678 671 186.0
C 12 252 60084 319.41 678 671 186.0
D 12 110 8647325 54230.62 562 536 159.4
D 11 129 585084 3666.15 562 536 159.4
D 12 2 385383 2413.67 562 536 159.4

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