ASTROSAT CZTI

Data Quality Report

Orbit 58931

Creation date: 2026-08-19T08:12:33.206789
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_004T07_9000006598_58931cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58931cztM0_level2_quad_clean.evt
Size (bytes)855,207,36085,478,400
Size815.6 MB 81.5 MB
Events in quadrant A8,146,324477,417
Events in quadrant B4,043,370709,204
Events in quadrant C5,224,330610,176
Events in quadrant D13,707,514309,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289271
B0168911
C0204421
D0454365

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6919205629.715277%
B69192463.555427%
C69205287.630058%
D6919370253.504842%

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 7889 6919 1851 1851 23.46% 26.75%
B 7889 6920 138 138 1.75% 1.99%
C 7890 6920 456 456 5.78% 6.59%
D 7888 6918 3798 3798 48.15% 54.90%

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 14 238 5178596 32925.06 634 619 157.3
A 15 233 340530 2161.38 634 619 157.3
A 3 14 50782 318.97 634 619 157.3
B 5 185 364110 2247.07 747 719 161.7
B 4 171 259234 1598.56 747 719 161.7
B 4 236 143058 880.17 747 719 161.7
C 15 208 832274 4211.92 715 707 197.4
C 12 249 616818 3120.63 715 707 197.4
C 4 5 359010 1814.82 715 707 197.4
D 12 110 9704523 54782.33 613 585 177.1
D 11 129 745677 4206.32 613 585 177.1
D 6 239 360435 2031.48 613 585 177.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct