ASTROSAT CZTI

Data Quality Report

Orbit 55193

Creation date: 2025-12-11T17:36:40.399237
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_55193cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55193cztM0_level2_quad_clean.evt
Size (bytes)1,233,319,680265,541,760
Size1.1 GB 253.2 MB
Events in quadrant A11,268,8701,716,712
Events in quadrant B8,488,7111,866,294
Events in quadrant C9,937,4891,640,553
Events in quadrant D14,467,8761,490,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470742
B0400822
C0435662
D0567262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192457323.803585%
B192453431.782281%
C192464532.353736%
D1924612806.650733%

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 20280 19247 392 392 1.93% 2.04%
B 20280 19247 33 33 0.16% 0.17%
C 20281 19248 208 208 1.03% 1.08%
D 20281 19248 1015 1015 5.00% 5.27%

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 45 853905 1708.45 2027 1976 498.7
A 3 78 832069 1664.66 2027 1976 498.7
A 0 8 602452 1204.19 2027 1976 498.7
B 0 182 125615 287.8 2015 1936 429.7
B 5 185 116928 267.59 2015 1936 429.7
B 10 247 67404 152.34 2015 1936 429.7
C 13 3 688965 1287.14 1976 1964 533.7
C 1 16 577586 1078.47 1976 1964 533.7
C 14 254 225174 418.2 1976 1964 533.7
D 11 129 2067497 3781.68 1940 1854 546.2
D 2 249 1310505 2395.82 1940 1854 546.2
D 11 176 1240184 2267.08 1940 1854 546.2

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