ASTROSAT CZTI

Data Quality Report

Orbit 59094

Creation date: 2026-08-30T07:27:45.716508
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_59094cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59094cztM0_level2_quad_clean.evt
Size (bytes)711,967,68083,016,000
Size679.0 MB 79.2 MB
Events in quadrant A3,331,846675,845
Events in quadrant B3,612,894721,018
Events in quadrant C3,110,536648,507
Events in quadrant D15,782,6786,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144582
B0154092
C0141082
D0513452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6628540.814725%
B66281291.946288%
C6628300.452625%
D6628657299.155100%

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 7862 6627 26 26 0.33% 0.39%
B 7862 6627 55 55 0.70% 0.83%
C 7862 6628 29 29 0.37% 0.44%
D 7862 6627 5668 5668 72.09% 85.53%

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 3 14 279740 1534.81 736 720 181.8
A 10 251 67469 367.17 736 720 181.8
A 7 221 34476 185.68 736 720 181.8
B 4 171 235895 1518.13 730 704 154.9
B 5 236 185365 1191.96 730 704 154.9
B 10 128 73753 471.52 730 704 154.9
C 6 223 143693 725.61 720 711 197.1
C 4 5 38055 189.51 720 711 197.1
C 12 250 32479 161.21 720 711 197.1
D 12 1 15224880 664341.31 72 68 22.9
D 6 239 175998 7676.78 72 68 22.9
D 1 27 39063 1701.56 72 68 22.9

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