ASTROSAT CZTI

Data Quality Report

Orbit 55156

Creation date: 2025-12-08T09:31:12.444750
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_022T16_9000006532_55156cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55156cztM0_level2_quad_clean.evt
Size (bytes)429,598,080103,325,760
Size409.7 MB 98.5 MB
Events in quadrant A3,730,123679,848
Events in quadrant B3,346,737734,896
Events in quadrant C4,289,255636,770
Events in quadrant D3,995,450593,348

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163542
B0151452
C0176022
D0171612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69521462.100115%
B69521291.855581%
C69522603.739931%
D69522313.322785%

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 9262 6952 75 75 0.81% 1.08%
B 9262 6952 21 21 0.23% 0.30%
C 9262 6953 226 226 2.44% 3.25%
D 9262 6954 221 221 2.39% 3.18%

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 78 709477 3828.35 745 730 185.1
A 0 8 39939 211.79 745 730 185.1
A 7 237 17320 89.61 745 730 185.1
B 4 81 119279 740.9 746 720 160.0
B 2 249 73374 454.03 746 720 160.0
B 5 185 71144 440.09 746 720 160.0
C 13 3 803409 4059.63 718 710 197.7
C 10 22 281711 1421.16 718 710 197.7
C 1 16 200939 1012.65 718 710 197.7
D 11 129 303056 1497.38 705 675 201.9
D 2 172 220882 1090.46 705 675 201.9
D 11 224 198314 978.7 705 675 201.9

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