ASTROSAT CZTI

Data Quality Report

Orbit 54893

Creation date: 2025-11-20T17:06:33.264369
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_039T06_9000006526_54893cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54893cztM0_level2_quad_clean.evt
Size (bytes)459,944,64098,665,920
Size438.6 MB 94.1 MB
Events in quadrant A5,483,853641,113
Events in quadrant B3,014,848702,196
Events in quadrant C3,737,696620,176
Events in quadrant D4,278,582565,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208952
B0137552
C0156682
D0171692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65772283.466626%
B6577971.474837%
C6577911.383610%
D65772794.242056%

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 7672 6578 92 92 1.20% 1.40%
B 7672 6578 4 4 0.05% 0.06%
C 7672 6578 43 43 0.56% 0.65%
D 7672 6578 215 215 2.80% 3.27%

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 3 14 2495824 13883.09 720 702 179.7
A 0 8 172273 954.63 720 702 179.7
A 13 254 19029 101.97 720 702 179.7
B 5 236 59511 384.39 716 690 153.0
B 12 6 27739 176.76 716 690 153.0
B 5 185 19128 120.49 716 690 153.0
C 4 5 600078 3111.92 703 697 192.6
C 6 223 129387 668.14 703 697 192.6
C 14 254 68683 352.98 703 697 192.6
D 1 31 313061 1589.28 698 669 196.6
D 6 42 254881 1293.29 698 669 196.6
D 10 181 239884 1217.0 698 669 196.6

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