ASTROSAT CZTI

Data Quality Report

Orbit 59084

Creation date: 2026-08-29T16:23:13.215181
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_59084cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59084cztM0_level2_quad_clean.evt
Size (bytes)1,064,833,92087,117,120
Size1015.5 MB 83.1 MB
Events in quadrant A4,549,785747,045
Events in quadrant B6,872,910722,973
Events in quadrant C7,416,971569,464
Events in quadrant D19,965,87449,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187910
B0257540
C0276650
D0646660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78881201.521298%
B788898912.538032%
C7888180122.832150%
D7889737193.433895%

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 7888 7888 95 95 1.20% 1.20%
B 7888 7888 655 655 8.30% 8.30%
C 7888 7888 1253 1253 15.88% 15.88%
D 7889 7889 7249 7249 91.89% 91.89%

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 0 24 521488 2441.24 869 845 213.3
A 13 248 288639 1349.44 869 845 213.3
A 3 14 122332 569.64 869 845 213.3
B 10 128 1958090 10975.23 830 797 178.3
B 5 236 731470 4097.14 830 797 178.3
B 4 171 521706 2920.92 830 797 178.3
C 15 198 4006773 19701.97 742 733 203.3
C 3 233 225412 1104.99 742 733 203.3
C 6 223 119592 584.56 742 733 203.3
D 12 1 17147787 307115.82 186 176 55.8
D 2 62 968883 17349.66 186 176 55.8
D 12 110 658999 11799.6 186 176 55.8

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