ASTROSAT CZTI

Data Quality Report

Orbit 58093

Creation date: 2026-06-23T23:55:14.864412
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_042T02_9000006586_58093cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58093cztM0_level2_quad_clean.evt
Size (bytes)633,064,32093,706,560
Size603.7 MB 89.4 MB
Events in quadrant A3,128,538662,031
Events in quadrant B9,058,529556,260
Events in quadrant C3,336,106627,209
Events in quadrant D7,399,452531,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141401
B0315781
C0147251
D0265571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602981.484399%
B6603170225.776162%
C6603691.044980%
D660282412.481066%

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 7567 6603 20 20 0.26% 0.30%
B 7568 6603 1248 1248 16.49% 18.90%
C 7568 6604 33 33 0.44% 0.50%
D 7567 6603 810 810 10.70% 12.27%

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 10 251 114691 612.82 753 734 186.0
A 7 112 41541 219.45 753 734 186.0
A 13 248 23404 121.91 753 734 186.0
B 10 128 5335843 36756.62 673 648 145.1
B 5 172 724786 4988.92 673 648 145.1
B 0 156 83706 572.22 673 648 145.1
C 12 252 118686 592.69 723 716 199.0
C 6 223 105554 526.71 723 716 199.0
C 14 254 102158 509.65 723 716 199.0
D 12 110 2136191 10792.91 694 663 197.9
D 3 224 658680 3325.6 694 663 197.9
D 8 160 626665 3163.8 694 663 197.9

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