ASTROSAT CZTI

Data Quality Report

Orbit 58070

Creation date: 2026-06-22T13:23:09.487076
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_031T01_9000006584_58070cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58070cztM0_level2_quad_clean.evt
Size (bytes)1,427,745,600197,861,760
Size1.3 GB 188.7 MB
Events in quadrant A6,907,8831,400,883
Events in quadrant B15,078,4291,302,828
Events in quadrant C10,343,1961,252,405
Events in quadrant D19,366,2441,001,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318821
B0551751
C0415571
D0680451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149531721.150271%
B14954224515.012706%
C1495411097.416076%
D14954355923.799652%

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 15268 14954 36 36 0.24% 0.24%
B 15269 14955 1210 1210 7.92% 8.09%
C 15269 14955 843 843 5.52% 5.64%
D 15269 14955 3250 3250 21.28% 21.73%

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 10 251 404671 990.27 1663 1624 407.0
A 13 248 42009 99.22 1663 1624 407.0
A 13 254 22715 51.82 1663 1624 407.0
B 10 128 4762332 13947.71 1574 1508 341.3
B 5 172 3242247 9494.34 1574 1508 341.3
B 4 171 265231 772.63 1574 1508 341.3
C 12 252 2249346 5302.78 1564 1552 423.9
C 12 254 1290975 3041.88 1564 1552 423.9
C 15 201 321567 754.95 1564 1552 423.9
D 12 110 8467657 20557.28 1485 1425 411.8
D 2 120 1304325 3163.64 1485 1425 411.8
D 15 94 1122847 2722.98 1485 1425 411.8

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