ASTROSAT CZTI

Data Quality Report

Orbit 53066

Creation date: 2025-07-21T11:11:23.281627
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_53066cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53066cztM0_level2_quad_clean.evt
Size (bytes)644,817,60087,048,000
Size614.9 MB 83.0 MB
Events in quadrant A5,810,058579,646
Events in quadrant B3,390,433647,211
Events in quadrant C9,506,544412,896
Events in quadrant D4,652,393537,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218982
B0149731
C0328131
D0185151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65726449.799148%
B65732023.073178%
C6573218433.226837%
D65733475.279172%

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 7332 6573 387 387 5.28% 5.89%
B 7333 6574 82 82 1.12% 1.25%
C 7333 6574 1917 1917 26.14% 29.16%
D 7333 6574 234 234 3.19% 3.56%

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 9 191 930815 5717.8 658 642 162.7
A 3 49 898133 5516.9 658 642 162.7
A 15 190 806968 4956.51 658 642 162.7
B 1 255 256405 1795.52 662 639 142.4
B 4 81 174151 1218.09 662 639 142.4
B 7 128 90031 627.55 662 639 142.4
C 1 241 3549308 23458.0 549 544 151.3
C 15 224 1769492 11693.08 549 544 151.3
C 10 171 797797 5269.99 549 544 151.3
D 12 17 704631 3798.23 642 610 185.4
D 2 62 575395 3101.0 642 610 185.4
D 3 12 175305 942.49 642 610 185.4

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