ASTROSAT CZTI

Data Quality Report

Orbit 59229

Creation date: 2026-09-08T10:24:15.041021
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/AS1T05_271T01_9000006604_59229cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59229cztM0_level2_quad_clean.evt
Size (bytes)649,013,760123,327,360
Size618.9 MB 117.6 MB
Events in quadrant A4,278,264829,361
Events in quadrant B4,176,123885,224
Events in quadrant C5,361,381777,168
Events in quadrant D9,548,126650,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188691
B0186371
C0219041
D0343721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85171071.256311%
B85171862.183868%
C85183784.437661%
D8518134315.766612%

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 8857 8518 48 48 0.54% 0.56%
B 8857 8517 44 44 0.50% 0.52%
C 8858 8519 293 293 3.31% 3.44%
D 8858 8519 1091 1091 12.32% 12.81%

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 10 251 400005 1703.54 953 925 234.3
A 3 14 126187 534.7 953 925 234.3
A 14 238 37488 156.08 953 925 234.3
B 4 201 162122 792.9 944 906 203.3
B 4 236 87885 427.78 944 906 203.3
B 0 186 76218 370.4 944 906 203.3
C 12 252 704021 2797.92 922 916 251.3
C 6 223 520901 2069.22 922 916 251.3
C 15 147 162762 644.05 922 916 251.3
D 12 110 4228728 17117.3 876 838 247.0
D 11 129 1227805 4967.57 876 838 247.0
D 2 252 239556 966.49 876 838 247.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct