ASTROSAT CZTI

Data Quality Report

Orbit 54764

Creation date: 2025-11-12T00:01:18.980128
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_103T01_9000006524_54764cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54764cztM0_level2_quad_clean.evt
Size (bytes)595,183,68092,980,800
Size567.6 MB 88.7 MB
Events in quadrant A3,240,067659,916
Events in quadrant B6,872,334587,777
Events in quadrant C4,417,628607,680
Events in quadrant D6,990,010500,762

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143482
B0248732
C0178542
D0254152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65881622.459016%
B6588136220.673953%
C65883925.950213%
D6588124518.897996%

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 7718 6589 45 45 0.58% 0.68%
B 7718 6589 1006 1006 13.03% 15.27%
C 7718 6588 257 257 3.33% 3.90%
D 7718 6589 1127 1127 14.60% 17.10%

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 0 8 164974 896.55 748 730 183.2
A 4 206 67947 366.91 748 730 183.2
A 5 240 56389 303.82 748 730 183.2
B 2 249 2835796 19742.0 667 642 143.6
B 10 28 689407 4796.07 667 642 143.6
B 0 213 293570 2039.74 667 642 143.6
C 4 5 1003605 5197.64 705 699 193.0
C 13 3 532005 2753.53 705 699 193.0
C 6 223 29103 147.21 705 699 193.0
D 3 12 3631471 19538.37 652 624 185.8
D 11 129 351450 1887.87 652 624 185.8
D 3 176 108236 579.08 652 624 185.8

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