ASTROSAT CZTI

Data Quality Report

Orbit 59117

Creation date: 2026-08-31T22:25:13.962534
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_59117cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59117cztM0_level2_quad_clean.evt
Size (bytes)2,291,719,680214,836,480
Size2.1 GB 204.9 MB
Events in quadrant A10,597,1031,743,556
Events in quadrant B9,905,4901,846,555
Events in quadrant C19,334,4481,508,002
Events in quadrant D43,531,278100,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448214
B0426734
C0708215
D01421234

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189237764.100830%
B189246613.492919%
C18923208411.013053%
D189231790894.636157%

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 20158 18927 292 292 1.45% 1.54%
B 20159 18928 149 149 0.74% 0.79%
C 20158 18927 1126 1126 5.59% 5.95%
D 20158 18924 13933 13933 69.12% 73.63%

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 1358805 2625.98 2089 2030 516.7
A 0 24 552089 1064.61 2089 2030 516.7
A 7 160 317730 611.02 2089 2030 516.7
B 4 236 367903 834.37 2061 1984 438.6
B 10 247 312149 707.24 2061 1984 438.6
B 0 157 266687 603.58 2061 1984 438.6
C 3 233 7668560 14421.17 1943 1923 531.6
C 15 198 1399618 2629.11 1943 1923 531.6
C 5 250 655074 1228.6 1943 1923 531.6
D 12 1 39495344 344409.6 389 369 114.7
D 12 110 2072999 18074.04 389 369 114.7
D 3 12 98806 858.4 389 369 114.7

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