ASTROSAT CZTI

Data Quality Report

Orbit 59399

Creation date: 2026-09-19T20:10:56.567576
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_033T01_9000006608_59399cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59399cztM0_level2_quad_clean.evt
Size (bytes)442,860,480105,776,640
Size422.3 MB 100.9 MB
Events in quadrant A3,892,140689,371
Events in quadrant B3,452,718758,979
Events in quadrant C3,230,689680,274
Events in quadrant D5,292,392603,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160712
B0147672
C0142802
D0201992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67522944.354265%
B67532163.198578%
C6753831.229083%
D67535458.070487%

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 9072 6754 150 150 1.65% 2.22%
B 9073 6755 57 57 0.63% 0.84%
C 9073 6755 8 8 0.09% 0.12%
D 9073 6755 366 366 4.03% 5.42%

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 14 238 682841 3551.68 790 771 192.0
A 8 206 37089 189.12 790 771 192.0
A 3 14 36383 185.44 790 771 192.0
B 4 201 116047 687.76 787 758 167.6
B 5 185 58921 346.97 787 758 167.6
B 4 236 56034 329.75 787 758 167.6
C 6 223 79000 369.55 780 771 211.7
C 3 242 24528 112.23 780 771 211.7
C 0 244 24153 110.46 780 771 211.7
D 12 110 1886534 8673.61 769 735 217.4
D 13 138 150062 686.82 769 735 217.4
D 2 31 133018 608.43 769 735 217.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct