ASTROSAT CZTI

Data Quality Report

Orbit 35011

Creation date: 2022-06-11T10:57:47.799319
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/AS1T05_010T01_9000005016_35011cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35011cztM0_level2_quad_clean.evt
Size (bytes)1,461,899,520196,770,240
Size1.4 GB 187.7 MB
Events in quadrant A8,506,3721,206,705
Events in quadrant B10,593,7261,218,680
Events in quadrant C8,995,5291,202,589
Events in quadrant D14,996,8611,123,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361634
B0423253
C0365733
D0561883

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17532270.154004%
B175325263.000228%
C17532920.524755%
D175329925.658225%

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 23533 17536 6 6 0.03% 0.03%
B 23533 17536 311 311 1.32% 1.77%
C 23533 17536 51 51 0.22% 0.29%
D 23533 17536 886 886 3.76% 5.05%

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 83 184880 437.16 2092 2050 418.2
A 15 223 164415 388.22 2092 2050 418.2
A 13 6 36929 83.4 2092 2050 418.2
B 5 31 633014 1609.42 2060 2003 392.1
B 4 232 599787 1524.67 2060 2003 392.1
B 5 172 580735 1476.08 2060 2003 392.1
C 15 214 727367 1554.6 2030 2048 466.6
C 0 10 239072 508.02 2030 2048 466.6
C 15 159 51214 105.38 2030 2048 466.6
D 8 195 3511427 7232.93 1991 1940 485.2
D 5 223 764840 1572.31 1991 1940 485.2
D 10 118 763840 1570.25 1991 1940 485.2

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