ASTROSAT CZTI

Data Quality Report

Orbit 21112

Creation date: 2024-06-27T18:23:41.934903
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/AS1A05_163T01_9000003118_21112cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21112cztM0_level2_quad_clean.evt
Size (bytes)1,368,380,160186,134,400
Size1.3 GB 177.5 MB
Events in quadrant A7,313,5091,200,815
Events in quadrant B12,822,9021,106,957
Events in quadrant C7,367,1381,156,497
Events in quadrant D12,890,1131,100,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332031423
B0504422630
C0331191387
D0519582424

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033113
B032911
C033214
D033115

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155532421.555970%
B15530180811.641983%
C155482931.884487%
D155274542.923939%

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 20148 15586 0 0 0.00% 0.00%
B 20137 15556 1236 1236 6.14% 7.95%
C 20140 15589 0 0 0.00% 0.00%
D 20141 15554 213 213 1.06% 1.37%

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 15 192 24630 59.93 1890 1845 380.2
A 13 254 23207 56.19 1890 1845 380.2
A 0 226 16387 38.25 1890 1845 380.2
B 0 182 5134462 14870.28 1820 1775 345.2
B 7 220 257872 741.96 1820 1775 345.2
B 15 201 88584 251.5 1820 1775 345.2
C 14 238 280868 651.5 1817 1825 428.3
C 13 61 12696 25.38 1817 1825 428.3
C 8 128 5777 9.23 1817 1825 428.3
D 1 20 4950467 11296.58 1816 1766 438.1
D 9 1 359582 816.8 1816 1766 438.1
D 1 239 323457 734.34 1816 1766 438.1

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