ASTROSAT CZTI

Data Quality Report

Orbit 56943

Creation date: 2026-04-07T14:39:12.571279
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_083T14_9000006564_56943cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56943cztM0_level2_quad_clean.evt
Size (bytes)713,410,56078,687,360
Size680.4 MB 75.0 MB
Events in quadrant A6,565,844499,242
Events in quadrant B5,729,789587,046
Events in quadrant C3,238,729582,119
Events in quadrant D10,402,975290,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235752
B0212152
C0139152
D0350322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6069124520.514088%
B606990214.862416%
C60681572.587343%
D6069324353.435492%

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 7239 6069 1191 1191 16.45% 19.62%
B 7239 6070 639 639 8.83% 10.53%
C 7238 6069 94 94 1.30% 1.55%
D 7239 6069 2952 2952 40.78% 48.64%

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 7 64 3811453 25514.18 603 589 149.4
A 3 14 254623 1700.79 603 589 149.4
A 4 249 59086 391.64 603 589 149.4
B 5 172 2164006 16762.86 612 592 129.1
B 10 16 603057 4668.1 612 592 129.1
B 5 185 334882 2590.19 612 592 129.1
C 13 3 511874 2885.08 648 642 177.2
C 6 223 106915 599.74 648 642 177.2
C 14 254 25109 138.08 648 642 177.2
D 12 33 7221320 50470.31 499 473 143.1
D 8 240 574826 4014.46 499 473 143.1
D 12 1 280566 1957.72 499 473 143.1

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