ASTROSAT CZTI

Data Quality Report

Orbit 57843

Creation date: 2026-06-07T03:55:32.959395
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_125T11_9000006582_57843cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57843cztM0_level2_quad_clean.evt
Size (bytes)477,224,64091,414,080
Size455.1 MB 87.2 MB
Events in quadrant A2,784,271630,915
Events in quadrant B3,092,339672,768
Events in quadrant C7,036,504512,504
Events in quadrant D4,270,120519,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01304
B01308
C01306
D01304

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013573512
B014338566
C0269521814
D0182591235

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6253380.607708%
B6248951.520487%
C611287814.365183%
D61703345.413290%

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 7626 6458 15 15 0.20% 0.23%
B 7625 6455 55 55 0.72% 0.85%
C 7625 6426 657 657 8.62% 10.22%
D 7625 6436 290 290 3.80% 4.51%

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 3 245 103928 618.79 674 661 166.9
A 3 14 49805 294.48 674 661 166.9
A 3 128 9741 54.41 674 661 166.9
B 4 142 139872 990.92 664 639 140.5
B 5 185 127965 906.18 664 639 140.5
B 7 252 34796 243.09 664 639 140.5
C 9 38 3538503 21317.37 603 596 166.0
C 15 224 694068 4178.46 603 596 166.0
C 15 208 151765 910.86 603 596 166.0
D 12 110 1100392 6161.4 624 595 178.5
D 8 160 369007 2063.96 624 595 178.5
D 2 153 161309 900.37 624 595 178.5

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