ASTROSAT CZTI

Data Quality Report

Orbit 55968

Creation date: 2026-02-06T02:36:00.366708
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_066T02_9000006546_55968cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55968cztM0_level2_quad_clean.evt
Size (bytes)405,673,92092,689,920
Size386.9 MB 88.4 MB
Events in quadrant A4,499,516606,813
Events in quadrant B3,566,148647,994
Events in quadrant C2,797,238579,126
Events in quadrant D3,662,629532,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177671
B0148541
C0132031
D0154622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63141352.138106%
B63141231.948052%
C6315460.728424%
D63142584.086158%

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 7429 6315 45 45 0.61% 0.71%
B 7429 6315 36 36 0.48% 0.57%
C 7430 6316 19 19 0.26% 0.30%
D 7429 6315 185 185 2.49% 2.93%

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 7 64 1379261 8207.02 674 658 168.0
A 15 32 240697 1428.99 674 658 168.0
A 12 115 67126 395.69 674 658 168.0
B 2 249 390989 2733.86 667 642 142.8
B 0 199 177708 1240.11 667 642 142.8
B 0 229 96403 670.68 667 642 142.8
C 13 3 71551 393.71 656 650 180.1
C 12 249 45331 248.11 656 650 180.1
C 12 252 28798 156.3 656 650 180.1
D 11 129 626300 3388.83 647 619 184.6
D 6 42 157629 850.4 647 619 184.6
D 14 52 75895 407.71 647 619 184.6

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