ASTROSAT CZTI

Data Quality Report

Orbit 56094

Creation date: 2026-02-09T13:53:50.841755
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_083T03_9000006548_56094cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56094cztM0_level2_quad_clean.evt
Size (bytes)1,447,801,920254,433,600
Size1.3 GB 242.6 MB
Events in quadrant A11,572,3931,675,434
Events in quadrant B9,972,2611,838,585
Events in quadrant C12,808,6261,548,313
Events in quadrant D17,755,9581,319,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484253
B0425683
C0515323
D0664663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191838454.404942%
B191843771.965179%
C1918412526.526272%
D19184270614.105505%

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 20458 19186 469 469 2.29% 2.44%
B 20459 19187 33 33 0.16% 0.17%
C 20459 19187 800 800 3.91% 4.17%
D 20459 19187 2534 2534 12.39% 13.21%

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 15 32 2082157 4179.79 2008 1956 497.7
A 12 115 780674 1564.69 2008 1956 497.7
A 0 8 415773 831.49 2008 1956 497.7
B 4 21 1058624 2471.45 2012 1938 427.6
B 9 254 288621 670.51 2012 1938 427.6
B 10 247 163033 376.78 2012 1938 427.6
C 12 254 2913148 5548.67 1935 1915 524.7
C 12 252 685247 1302.4 1935 1915 524.7
C 9 38 547495 1039.85 1935 1915 524.7
D 8 129 5700343 10965.46 1859 1776 519.7
D 2 120 2592569 4985.33 1859 1776 519.7
D 6 42 556907 1068.21 1859 1776 519.7

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