ASTROSAT CZTI

Data Quality Report

Orbit 54046

Creation date: 2025-09-24T18:03:33.166703
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_041T01_9000006510_54046cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54046cztM0_level2_quad_clean.evt
Size (bytes)1,126,249,920150,137,280
Size1.0 GB 143.2 MB
Events in quadrant A6,761,5301,085,437
Events in quadrant B7,488,9011,187,791
Events in quadrant C6,791,9151,023,090
Events in quadrant D19,719,466421,349

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287962
B0302752
C0290292
D0668452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119673562.974847%
B119673733.116905%
C119684323.609626%
D11968714059.659091%

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 13242 11968 187 187 1.41% 1.56%
B 13242 11968 124 124 0.94% 1.04%
C 13243 11971 244 244 1.84% 2.04%
D 13242 11967 5112 5112 38.60% 42.72%

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 15 174 754704 2433.59 1251 1217 309.6
A 12 115 735415 2371.29 1251 1217 309.6
A 3 14 102243 326.29 1251 1217 309.6
B 5 236 961618 3632.07 1244 1202 264.4
B 4 173 600130 2265.0 1244 1202 264.4
B 15 20 291750 1098.78 1244 1202 264.4
C 13 3 1174143 3572.6 1203 1190 328.3
C 4 5 262713 796.55 1203 1190 328.3
C 9 38 188416 570.26 1203 1190 328.3
D 8 176 13193873 63944.85 719 686 206.3
D 2 165 1514049 7334.98 719 686 206.3
D 7 70 1129564 5471.46 719 686 206.3

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