ASTROSAT CZTI

Data Quality Report

Orbit 35135

Creation date: 2022-03-29T03:26:54.928545
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/AS1A11_047T09_9000005028_35135cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35135cztM0_level2_quad_clean.evt
Size (bytes)524,355,84062,784,000
Size500.1 MB 59.9 MB
Events in quadrant A2,842,514398,718
Events in quadrant B2,999,749399,364
Events in quadrant C3,367,488387,806
Events in quadrant D6,306,683338,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119413
B0124172
C0133162
D0225372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370470.875233%
B5370631.173184%
C53701372.551210%
D537063711.862197%

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 7042 5371 21 21 0.30% 0.39%
B 7042 5371 35 35 0.50% 0.65%
C 7042 5371 105 105 1.49% 1.95%
D 7042 5371 688 688 9.77% 12.81%

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 328081 2583.96 623 612 126.7
A 10 83 88485 693.38 623 612 126.7
A 13 6 15715 119.17 623 612 126.7
B 5 172 128191 1064.89 619 603 119.8
B 5 200 116932 970.92 619 603 119.8
B 5 236 108120 897.37 619 603 119.8
C 0 10 580319 4140.7 602 608 140.0
C 15 214 223215 1590.02 602 608 140.0
C 9 187 155184 1104.09 602 608 140.0
D 8 195 2553377 18049.86 580 564 141.4
D 10 118 418175 2952.75 580 564 141.4
D 12 79 328125 2316.05 580 564 141.4

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