ASTROSAT CZTI

Data Quality Report

Orbit 11307

Creation date: 2024-06-27T16:11:04.492362
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/AS1A04_144T01_9000001652_11307cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11307cztM0_level2_quad_clean.evt
Size (bytes)677,603,52097,968,960
Size646.2 MB 93.4 MB
Events in quadrant A4,836,679624,029
Events in quadrant B4,402,679663,100
Events in quadrant C3,280,132647,355
Events in quadrant D7,505,694521,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191983
B0181212
C0150572
D0273192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73213755.122251%
B73213685.026636%
C7321280.382461%
D7321135018.440104%

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 7936 7322 212 212 2.67% 2.90%
B 7936 7322 141 141 1.78% 1.93%
C 7936 7322 0 0 0.00% 0.00%
D 7936 7322 1203 1203 15.16% 16.43%

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 8 5 1309459 7553.69 847 830 173.2
A 1 162 74532 425.42 847 830 173.2
A 1 178 47281 268.13 847 830 173.2
B 4 239 887557 5291.7 861 841 167.6
B 3 189 48766 286.0 861 841 167.6
B 4 81 37825 220.71 861 841 167.6
C 13 61 6192 27.28 840 844 196.1
C 14 234 3468 13.38 840 844 196.1
C 3 202 1970 5.74 840 844 196.1
D 10 253 3184221 17625.77 747 725 180.6
D 1 52 933166 5162.56 747 725 180.6
D 2 14 264781 1461.98 747 725 180.6

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