ASTROSAT CZTI

Data Quality Report

Orbit 53159

Creation date: 2025-07-27T00:24:07.272480
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/AS1C09_011T07_9000006488_53159cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53159cztM0_level2_quad_clean.evt
Size (bytes)1,443,804,480175,901,760
Size1.3 GB 167.8 MB
Events in quadrant A9,654,5461,187,485
Events in quadrant B12,443,7431,284,251
Events in quadrant C22,391,486741,935
Events in quadrant D7,876,1561,146,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386412
B0466982
C0762042
D0333832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1396811658.340493%
B1396812719.099370%
C13968590642.282360%
D139693262.333739%

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 14343 13970 854 854 5.95% 6.11%
B 14343 13970 877 877 6.11% 6.28%
C 14343 13970 5099 5099 35.55% 36.50%
D 14344 13971 230 230 1.60% 1.65%

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 12 3 2148150 6051.65 1421 1381 354.7
A 0 8 753499 2120.19 1421 1381 354.7
A 12 194 280174 785.91 1421 1381 354.7
B 10 254 4541989 15240.62 1409 1359 297.9
B 2 249 738385 2473.83 1409 1359 297.9
B 4 81 484007 1620.01 1409 1359 297.9
C 1 241 7940398 25058.21 1152 1138 316.8
C 15 224 2669285 8421.31 1152 1138 316.8
C 15 158 2056956 6488.65 1152 1138 316.8
D 2 153 642078 1602.53 1413 1350 399.8
D 12 3 349367 870.43 1413 1350 399.8
D 2 120 293400 730.45 1413 1350 399.8

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