ASTROSAT CZTI

Data Quality Report

Orbit 55000

Creation date: 2025-11-27T22:09:21.516026
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_014T01_9000006528_55000cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_55000cztM0_level2_quad_clean.evt
Size (bytes)875,946,24092,211,840
Size835.4 MB 87.9 MB
Events in quadrant A4,699,546714,268
Events in quadrant B4,702,391766,975
Events in quadrant C3,753,666693,311
Events in quadrant D18,666,90077,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019351174
B019559172
C016957187
D061435722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01562
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77601572.023196%
B77622693.465602%
C7753340.438540%
D7736688288.960703%

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 7789 7770 124 124 1.59% 1.60%
B 7782 7772 166 166 2.13% 2.14%
C 7785 7763 35 35 0.45% 0.45%
D 7755 7736 6484 6484 83.61% 83.82%

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 711382 3441.34 836 813 206.5
A 15 32 505233 2442.95 836 813 206.5
A 0 8 120451 579.42 836 813 206.5
B 5 236 517798 2909.54 822 791 177.7
B 12 6 419801 2358.04 822 791 177.7
B 2 249 188175 1054.53 822 791 177.7
C 13 3 164168 727.76 817 811 224.5
C 1 16 101212 447.29 817 811 224.5
C 14 254 72534 319.53 817 811 224.5
D 15 94 16369318 185300.02 305 292 88.3
D 11 129 278115 3145.0 305 292 88.3
D 3 224 142272 1607.24 305 292 88.3

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