ASTROSAT CZTI

Data Quality Report

Orbit 57465

Creation date: 2026-05-12T17:31:48.571504
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_113T09_9000006574_57465cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57465cztM0_level2_quad_clean.evt
Size (bytes)486,005,76096,281,280
Size463.5 MB 91.8 MB
Events in quadrant A2,924,981655,870
Events in quadrant B5,418,154615,706
Events in quadrant C4,930,403601,940
Events in quadrant D4,209,516586,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133811
B0203741
C0190681
D0167811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526891.363776%
B6526100215.353969%
C65274186.404167%
D65272023.094837%

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 7616 6526 4 4 0.05% 0.06%
B 7616 6527 588 588 7.72% 9.01%
C 7617 6528 271 271 3.56% 4.15%
D 7617 6528 117 117 1.54% 1.79%

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 8 9 37450 204.04 737 717 180.0
A 3 14 16970 90.28 737 717 180.0
A 4 3 11090 57.62 737 717 180.0
B 4 206 2413593 16646.17 677 652 145.0
B 10 247 64793 442.49 677 652 145.0
B 0 63 51069 347.81 677 652 145.0
C 15 224 1613440 8588.37 693 687 187.8
C 1 16 244427 1297.98 693 687 187.8
C 14 254 151266 801.88 693 687 187.8
D 7 96 473374 2347.37 709 678 201.4
D 15 142 291270 1443.06 709 678 201.4
D 3 12 105117 518.64 709 678 201.4

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