ASTROSAT CZTI

Data Quality Report

Orbit 56428

Creation date: 2026-03-04T01:00:27.407647
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_083T05_9000006554_56428cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56428cztM0_level2_quad_clean.evt
Size (bytes)1,937,151,360227,465,280
Size1.8 GB 216.9 MB
Events in quadrant A22,480,2051,281,622
Events in quadrant B16,361,6061,552,273
Events in quadrant C12,933,8431,562,246
Events in quadrant D18,505,2091,215,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0795082
B0614402
C0513442
D0677872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18476478425.893050%
B18477302116.350057%
C1847710575.720626%
D18477361519.564864%

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 19571 18478 4370 4370 22.33% 23.65%
B 19572 18478 1874 1874 9.57% 10.14%
C 19572 18479 846 846 4.32% 4.58%
D 19572 18479 2902 2902 14.83% 15.70%

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 3 10297545 23782.96 1748 1701 432.9
A 12 194 1303639 3007.42 1748 1701 432.9
A 4 249 1130079 2606.5 1748 1701 432.9
B 4 206 6076765 15410.41 1848 1782 394.2
B 4 171 902526 2284.92 1848 1782 394.2
B 10 247 445612 1125.86 1848 1782 394.2
C 12 254 3385368 6653.52 1875 1860 508.5
C 13 3 388561 760.43 1875 1860 508.5
C 1 16 387939 759.21 1875 1860 508.5
D 8 129 8252344 17083.9 1705 1625 483.0
D 3 12 706072 1458.62 1705 1625 483.0
D 2 249 610685 1261.12 1705 1625 483.0

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