ASTROSAT CZTI

Data Quality Report

Orbit 51005

Creation date: 2025-03-03T21:54:28.729209
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/AS1C07_001T02_9000006452_51005cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51005cztM0_level2_quad_clean.evt
Size (bytes)605,376,00094,351,680
Size577.3 MB 90.0 MB
Events in quadrant A5,795,354607,453
Events in quadrant B4,292,023684,036
Events in quadrant C6,559,328519,167
Events in quadrant D5,225,284563,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219191
B0176611
C0243421
D0204771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69256449.299639%
B69253314.779783%
C6925129218.657040%
D69253935.675090%

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 6945 6926 549 549 7.90% 7.93%
B 6945 6926 124 124 1.79% 1.79%
C 6945 6926 997 997 14.36% 14.40%
D 6945 6926 302 302 4.35% 4.36%

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 10 253 1058869 6010.45 718 700 176.1
A 12 80 855372 4854.58 718 700 176.1
A 4 3 210091 1189.35 718 700 176.1
B 4 171 341459 2238.92 718 693 152.2
B 7 252 218609 1431.76 718 693 152.2
B 1 207 210824 1380.61 718 693 152.2
C 13 3 2341913 13272.39 633 626 176.4
C 1 44 349477 1977.58 633 626 176.4
C 14 96 338202 1913.67 633 626 176.4
D 8 176 638785 3267.53 699 672 195.3
D 2 216 534245 2732.22 699 672 195.3
D 15 108 377023 1927.15 699 672 195.3

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