ASTROSAT CZTI

Data Quality Report

Orbit 33240

Creation date: 2024-06-27T20:46:29.696837
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/AS1A10_067T01_9000004774_33240cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33240cztM0_level2_quad_clean.evt
Size (bytes)743,757,12079,113,600
Size709.3 MB 75.4 MB
Events in quadrant A3,004,324565,690
Events in quadrant B3,888,095556,337
Events in quadrant C3,095,515556,419
Events in quadrant D12,128,703294,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128153
B0155112
C0131272
D0402522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6037691.142952%
B60371893.130694%
C6037791.308597%
D6037360059.632268%

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 8812 6039 49 49 0.56% 0.81%
B 8812 6039 111 111 1.26% 1.84%
C 8812 6039 65 65 0.74% 1.08%
D 8812 6039 3139 3139 35.62% 51.98%

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 15 169 217940 1511.09 715 700 143.8
A 13 6 16066 106.88 715 700 143.8
A 13 254 10841 70.54 715 700 143.8
B 5 172 433339 3161.07 703 683 136.9
B 4 170 356320 2598.35 703 683 136.9
B 5 200 91307 662.12 703 683 136.9
C 0 10 240684 1495.28 689 694 160.5
C 9 187 86602 535.26 689 694 160.5
C 10 49 23421 141.6 689 694 160.5
D 12 3 5742423 43083.73 484 473 133.3
D 8 195 2434299 18261.79 484 473 133.3
D 7 80 934621 7009.22 484 473 133.3

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