ASTROSAT CZTI

Data Quality Report

Orbit 59088

Creation date: 2026-08-29T23:38:12.960559
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_004T02_9000006600_59088cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59088cztM0_level2_quad_clean.evt
Size (bytes)2,263,999,680211,296,960
Size2.1 GB 201.5 MB
Events in quadrant A10,634,4051,769,885
Events in quadrant B11,251,4171,846,093
Events in quadrant C13,537,3951,457,128
Events in quadrant D46,937,05836,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440463
B0460273
C0533193
D01519543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186785022.687654%
B186797063.779646%
C18679220411.799347%
D186791838298.409979%

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 19983 18678 157 157 0.79% 0.84%
B 19984 18679 272 272 1.36% 1.46%
C 19984 18679 1371 1371 6.86% 7.34%
D 19983 18678 17107 17107 85.61% 91.59%

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 15 233 480000 932.66 2088 2040 512.5
A 0 24 433983 842.86 2088 2040 512.5
A 13 248 404823 785.96 2088 2040 512.5
B 5 236 1351527 3096.23 2043 1967 435.9
B 4 171 465393 1063.22 2043 1967 435.9
B 5 185 424211 968.73 2043 1967 435.9
C 15 198 4560553 8696.89 1926 1911 524.2
C 3 233 515683 980.16 1926 1911 524.2
C 6 223 323219 612.98 1926 1911 524.2
D 12 1 40404893 364339.23 381 362 110.9
D 12 110 2816536 25394.25 381 362 110.9
D 1 27 693527 6250.47 381 362 110.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct