ASTROSAT CZTI

Data Quality Report

Orbit 52659

Creation date: 2025-06-24T10:37:40.720779
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_9000006480_52659cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52659cztM0_level2_quad_clean.evt
Size (bytes)932,826,24079,030,080
Size889.6 MB 75.4 MB
Events in quadrant A4,157,987630,798
Events in quadrant B10,728,096487,970
Events in quadrant C10,079,429411,071
Events in quadrant D9,046,675394,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174292
B0365832
C0346322
D0316167

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714500.744713%
B6715224333.402829%
C6715236835.264334%
D6714222033.065237%

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 7655 6716 29 29 0.38% 0.43%
B 7655 6715 1819 1819 23.76% 27.09%
C 7655 6715 2294 2294 29.97% 34.16%
D 7655 6716 1790 1790 23.38% 26.65%

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 1084699 6344.29 678 661 170.9
A 4 249 56319 325.73 678 661 170.9
A 5 240 35831 205.83 678 661 170.9
B 10 128 5518315 42159.33 618 595 130.9
B 10 254 1114843 8513.65 618 595 130.9
B 12 32 579441 4422.8 618 595 130.9
C 15 233 5797013 38002.47 551 546 152.5
C 15 158 1037182 6796.34 551 546 152.5
C 15 248 331166 2167.59 551 546 152.5
D 8 176 3064681 19249.28 544 517 159.2
D 6 42 2635930 16555.83 544 517 159.2
D 1 7 223961 1403.69 544 517 159.2

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