ASTROSAT CZTI

Data Quality Report

Orbit 58748

Creation date: 2026-08-07T02:17:54.359668
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_106T01_9000006596_58748cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58748cztM0_level2_quad_clean.evt
Size (bytes)1,254,873,600172,143,360
Size1.2 GB 164.2 MB
Events in quadrant A7,857,1541,221,849
Events in quadrant B7,881,7431,309,640
Events in quadrant C8,083,2781,178,249
Events in quadrant D21,627,119607,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032935513
B033197573
C033781438
D0747671712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02702
B02708
C02704
D02706

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129636675.145414%
B129616184.768151%
C129916454.964976%
D12839629749.045876%

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 15743 13122 369 369 2.34% 2.81%
B 15744 13116 186 186 1.18% 1.42%
C 15744 13137 366 366 2.32% 2.79%
D 15744 13074 5164 5164 32.80% 39.50%

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 17 1247708 3500.73 1451 1416 356.0
A 3 14 373312 1044.63 1451 1416 356.0
A 15 233 198669 554.07 1451 1416 356.0
B 0 171 891971 2957.57 1440 1387 301.1
B 4 201 254414 840.29 1440 1387 301.1
B 8 234 192349 634.17 1440 1387 301.1
C 13 3 1053717 2737.21 1412 1398 384.4
C 4 5 648794 1683.95 1412 1398 384.4
C 12 252 165645 427.23 1412 1398 384.4
D 11 129 14023964 47381.3 1040 993 296.0
D 15 142 2328656 7864.79 1040 993 296.0
D 2 249 379292 1278.21 1040 993 296.0

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