ASTROSAT CZTI

Data Quality Report

Orbit 07701

Creation date: 2024-06-27T15:22:53.945471
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/AS1A02_155T01_9000001062_07701cztM0_level2.evt modeM0/AS1A02_155T01_9000001062_07701cztM0_level2_quad_clean.evt
Size (bytes)436,573,44072,092,160
Size416.3 MB 68.8 MB
Events in quadrant A3,154,524437,370
Events in quadrant B3,241,107446,158
Events in quadrant C3,212,818439,189
Events in quadrant D3,181,177416,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132393
B0134082
C0134772
D0134572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63581181.855930%
B63581031.620006%
C6358911.431268%
D6358971.525637%

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 7583 6359 0 0 0.00% 0.00%
B 7583 6359 0 0 0.00% 0.00%
C 7583 6359 0 0 0.00% 0.00%
D 7583 6359 10 10 0.13% 0.16%

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 0 226 7975 43.54 817 798 164.8
A 12 194 7173 38.68 817 798 164.8
A 13 14 5596 29.11 817 798 164.8
B 15 85 17947 111.23 817 797 154.2
B 12 111 15682 96.54 817 797 154.2
B 0 230 14706 90.21 817 797 154.2
C 9 68 66968 356.47 802 807 185.6
C 12 4 8072 39.14 802 807 185.6
C 8 229 6673 31.61 802 807 185.6
D 12 221 32125 159.71 801 775 196.3
D 2 152 27420 135.74 801 775 196.3
D 12 233 24436 120.54 801 775 196.3

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