ASTROSAT CZTI

Data Quality Report

Orbit 55911

Creation date: 2026-01-30T17:51:57.789417
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_030T02_9000006544_55911cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55911cztM0_level2_quad_clean.evt
Size (bytes)436,561,92095,198,400
Size416.3 MB 90.8 MB
Events in quadrant A3,812,456626,907
Events in quadrant B2,905,392689,151
Events in quadrant C3,444,388605,640
Events in quadrant D5,493,153508,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162732
B0134932
C0149992
D0208202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64861502.312673%
B6486550.847980%
C64871201.849854%
D648781412.548173%

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 8831 6488 101 101 1.14% 1.56%
B 8831 6488 7 7 0.08% 0.11%
C 8832 6489 81 81 0.92% 1.25%
D 8831 6488 757 757 8.57% 11.67%

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 12 115 572656 3386.12 686 668 168.9
A 15 32 380883 2250.84 686 668 168.9
A 3 14 53107 310.43 686 668 168.9
B 0 199 41749 279.75 690 665 146.9
B 5 185 39905 267.19 690 665 146.9
B 7 252 37047 247.73 690 665 146.9
C 12 252 444532 2383.4 682 675 186.2
C 15 199 259364 1389.09 682 675 186.2
C 13 3 50466 267.37 682 675 186.2
D 11 129 2336319 12895.4 641 612 181.1
D 3 12 380144 2095.39 641 612 181.1
D 7 96 94583 518.81 641 612 181.1

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