ASTROSAT CZTI

Data Quality Report

Orbit 57489

Creation date: 2026-05-14T09:38:37.527488
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_113T09_9000006574_57489cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57489cztM0_level2_quad_clean.evt
Size (bytes)1,229,929,920231,240,960
Size1.1 GB 220.5 MB
Events in quadrant A8,669,7601,472,526
Events in quadrant B11,008,9711,576,940
Events in quadrant C13,438,2431,374,332
Events in quadrant D10,914,9811,245,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405193
B0464983
C0535453
D0464923

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193161750.905985%
B193177864.068955%
C193179765.052544%
D193176013.111249%

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 21115 19593 94 94 0.45% 0.48%
B 21116 19595 313 313 1.48% 1.60%
C 21116 19593 761 761 3.60% 3.88%
D 21116 19595 561 561 2.66% 2.86%

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 13 248 405141 788.19 2090 2039 511.4
A 0 12 54924 103.41 2090 2039 511.4
A 7 64 31143 56.91 2090 2039 511.4
B 4 206 1893939 4354.79 2050 1971 434.5
B 5 185 214036 488.11 2050 1971 434.5
B 0 245 164482 374.05 2050 1971 434.5
C 15 224 4863460 9020.27 1988 1967 539.0
C 12 252 200983 369.26 1988 1967 539.0
C 14 254 181008 332.2 1988 1967 539.0
D 15 142 1284419 2288.32 1998 1912 560.5
D 7 96 589337 1048.12 1998 1912 560.5
D 8 240 367902 653.02 1998 1912 560.5

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