ASTROSAT CZTI

Data Quality Report

Orbit 58963

Creation date: 2026-08-21T12:39:20.802825
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_004T07_9000006598_58963cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58963cztM0_level2_quad_clean.evt
Size (bytes)471,816,00097,248,960
Size450.0 MB 92.7 MB
Events in quadrant A4,123,964654,925
Events in quadrant B4,156,385686,716
Events in quadrant C3,413,287630,007
Events in quadrant D5,276,695528,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163313
B0166242
C0145622
D0198912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63651282.010998%
B63653785.938727%
C63651091.712490%
D636577612.191673%

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 7571 6366 45 45 0.59% 0.71%
B 7571 6366 192 192 2.54% 3.02%
C 7571 6366 85 85 1.12% 1.34%
D 7571 6366 714 714 9.43% 11.22%

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 814472 4516.12 737 721 180.2
A 14 238 378109 2094.41 737 721 180.2
A 0 24 26697 144.16 737 721 180.2
B 2 249 675638 4413.79 719 692 152.9
B 4 236 254947 1662.69 719 692 152.9
B 6 255 133572 868.96 719 692 152.9
C 12 252 476235 2435.06 712 703 195.3
C 6 223 48905 246.83 712 703 195.3
C 12 249 41712 210.0 712 703 195.3
D 7 222 1266201 6513.96 683 652 194.3
D 12 110 727193 3739.61 683 652 194.3
D 2 249 214468 1100.54 683 652 194.3

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