ASTROSAT CZTI

Data Quality Report

Orbit 59024

Creation date: 2026-08-25T15:15:39.913600
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_59024cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59024cztM0_level2_quad_clean.evt
Size (bytes)732,836,16090,699,840
Size698.9 MB 86.5 MB
Events in quadrant A4,890,772669,506
Events in quadrant B4,078,859707,213
Events in quadrant C12,117,131276,942
Events in quadrant D5,491,333600,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193302
B0171162
C0407282
D0211712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70712473.493141%
B70714235.982181%
C7071425360.147080%
D70713304.666950%

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 7730 7071 38 38 0.49% 0.54%
B 7730 7071 169 169 2.19% 2.39%
C 7730 7071 4117 4117 53.26% 58.22%
D 7730 7071 247 247 3.20% 3.49%

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 0 24 1614998 8358.22 791 771 193.1
A 8 246 79665 408.5 791 771 193.1
A 10 251 32685 165.25 791 771 193.1
B 2 249 579863 3475.37 776 747 166.6
B 4 236 284027 1700.01 776 747 166.6
B 0 157 42822 252.5 776 747 166.6
C 15 219 9897341 69299.17 520 516 142.8
C 14 254 66088 459.15 520 516 142.8
C 12 250 35551 245.32 520 516 142.8
D 12 110 993429 4616.76 763 729 215.0
D 12 1 738169 3429.62 763 729 215.0
D 2 62 265255 1230.23 763 729 215.0

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