ASTROSAT CZTI

Data Quality Report

Orbit 59066

Creation date: 2026-08-29T11:28:31.688574
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_004T02_9000006600_59066cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59066cztM0_level2_quad_clean.evt
Size (bytes)756,123,84074,033,280
Size721.1 MB 70.6 MB
Events in quadrant A2,855,225611,648
Events in quadrant B3,140,734646,249
Events in quadrant C5,854,333513,003
Events in quadrant D15,657,95438,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129191
B0137121
C0216241
D0506641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6187931.503152%
B61881973.183581%
C6187100316.211411%
D6187583894.359140%

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 7282 6187 6 6 0.08% 0.10%
B 7283 6188 61 61 0.84% 0.99%
C 7281 6187 712 712 9.78% 11.51%
D 7281 6186 5675 5675 77.94% 91.74%

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 36573 208.5 699 681 172.1
A 10 251 28096 159.26 699 681 172.1
A 13 248 26507 150.03 699 681 172.1
B 4 201 223066 1516.01 687 663 146.7
B 4 171 61441 414.29 687 663 146.7
B 5 185 39760 266.51 687 663 146.7
C 15 219 2870393 16625.24 626 619 172.6
C 15 198 334627 1934.98 626 619 172.6
C 6 13 88446 508.8 626 619 172.6
D 12 1 13532873 234984.3 200 191 57.6
D 6 239 637723 11070.24 200 191 57.6
D 2 62 456301 7919.99 200 191 57.6

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