ASTROSAT CZTI

Data Quality Report

Orbit 35708

Creation date: 2022-05-06T18:26:15.130820
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/AS1A09_029T01_9000005116_35708cztM0_level2.evt modeM0/AS1A09_029T01_9000005116_35708cztM0_level2_quad_clean.evt
Size (bytes)391,613,76088,084,800
Size373.5 MB 84.0 MB
Events in quadrant A2,632,036585,587
Events in quadrant B3,081,976583,789
Events in quadrant C2,973,408567,347
Events in quadrant D2,807,296554,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112852
B0126001
C0121741
D0118851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537770.130184%
B53771092.027153%
C5377711.320439%
D5377370.688116%

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 7199 5378 0 0 0.00% 0.00%
B 7199 5378 84 84 1.17% 1.56%
C 7199 5378 58 58 0.81% 1.08%
D 7199 5378 31 31 0.43% 0.58%

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 10 83 124560 954.66 644 632 129.8
A 7 48 8958 64.14 644 632 129.8
A 15 223 6571 45.75 644 632 129.8
B 5 172 433031 3574.33 628 613 121.0
B 5 255 100372 824.6 628 613 121.0
B 15 85 26017 209.99 628 613 121.0
C 15 214 225274 1605.17 607 612 140.0
C 0 10 157292 1119.45 607 612 140.0
C 9 187 116935 831.11 607 612 140.0
D 13 249 121407 795.71 621 602 151.8
D 2 153 90496 592.11 621 602 151.8
D 2 250 54190 352.97 621 602 151.8

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