ASTROSAT CZTI

Data Quality Report

Orbit 58668

Creation date: 2026-08-02T11:20:37.781245
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_004T06_9000006594_58668cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58668cztM0_level2_quad_clean.evt
Size (bytes)2,380,564,800390,320,640
Size2.2 GB 372.2 MB
Events in quadrant A18,818,1872,577,537
Events in quadrant B15,437,5372,850,670
Events in quadrant C19,124,0492,444,744
Events in quadrant D32,532,0721,979,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076069181
B066030178
C077461226
D0116479153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05844
B05842
C05840
D05840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2858118766.563801%
B2858310113.537067%
C2857223648.273835%
D28592649322.709149%

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 31502 28632 1451 1451 4.61% 5.07%
B 31502 28630 353 353 1.12% 1.23%
C 31502 28626 1761 1761 5.59% 6.15%
D 31503 28645 6182 6182 19.62% 21.58%

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 10 17 6132768 8050.38 3095 3016 761.4
A 10 251 345611 449.94 3095 3016 761.4
A 12 114 183826 237.46 3095 3016 761.4
B 5 185 1216620 1828.59 3102 2977 663.7
B 0 171 545855 817.95 3102 2977 663.7
B 5 172 344812 515.04 3102 2977 663.7
C 15 147 2519634 3112.6 2963 2939 808.5
C 15 217 1817474 2244.18 2963 2939 808.5
C 12 250 672574 828.19 2963 2939 808.5
D 2 249 14124850 18262.14 2738 2621 773.3
D 8 240 3319177 4288.8 2738 2621 773.3
D 11 129 2057488 2657.25 2738 2621 773.3

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