ASTROSAT CZTI

Data Quality Report

Orbit 59350

Creation date: 2026-09-16T14:44:30.437442
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_033T01_9000006608_59350cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59350cztM0_level2_quad_clean.evt
Size (bytes)2,111,431,680348,039,360
Size2.0 GB 331.9 MB
Events in quadrant A12,295,7122,402,538
Events in quadrant B14,109,1642,575,914
Events in quadrant C13,336,1312,349,771
Events in quadrant D36,425,1721,436,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560643
B0602043
C0571383
D01262613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257644321.676758%
B257659343.625073%
C257653491.354551%
D25765843432.734330%

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 27329 25767 167 167 0.61% 0.65%
B 27330 25767 346 346 1.27% 1.34%
C 27330 25768 137 137 0.50% 0.53%
D 27330 25766 7582 7582 27.74% 29.43%

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 15 233 860632 1266.14 2798 2723 677.6
A 10 251 411450 603.22 2798 2723 677.6
A 14 238 82443 117.65 2798 2723 677.6
B 4 236 1104833 1869.92 2767 2656 589.4
B 4 171 556850 940.23 2767 2656 589.4
B 5 236 452771 763.65 2767 2656 589.4
C 3 233 1268567 1687.4 2754 2734 750.2
C 12 252 740860 983.95 2754 2734 750.2
C 1 16 195633 257.14 2754 2734 750.2
D 12 110 24634871 35416.08 2439 2331 695.5
D 3 12 1004201 1440.47 2439 2331 695.5
D 1 3 272732 388.78 2439 2331 695.5

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