ASTROSAT CZTI

Data Quality Report

Orbit 56454

Creation date: 2026-03-05T19:50:24.585393
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_060T01_9000006556_56454cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56454cztM0_level2_quad_clean.evt
Size (bytes)567,685,440101,053,440
Size541.4 MB 96.4 MB
Events in quadrant A4,307,808650,003
Events in quadrant B5,891,562670,571
Events in quadrant C4,716,918637,721
Events in quadrant D5,541,663601,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177482
B0223470
C0189770
D0213641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71712703.765165%
B71736238.685348%
C71731942.704587%
D71721161.617401%

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 7172 7172 240 240 3.35% 3.35%
B 7173 7173 414 414 5.77% 5.77%
C 7173 7173 175 175 2.44% 2.44%
D 7172 7172 139 139 1.94% 1.94%

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 4 206 695082 3671.93 763 744 189.1
A 12 3 149170 784.93 763 744 189.1
A 8 249 119440 627.71 763 744 189.1
B 5 172 1580331 9952.33 734 709 158.7
B 4 206 995429 6267.18 734 709 158.7
B 8 128 164481 1031.84 734 709 158.7
C 12 254 752371 3700.61 745 737 203.1
C 1 16 686866 3378.1 745 737 203.1
C 12 252 236818 1162.32 745 737 203.1
D 5 113 1533661 7290.04 746 714 210.3
D 9 49 299533 1421.06 746 714 210.3
D 3 12 219924 1042.47 746 714 210.3

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