ASTROSAT CZTI

Data Quality Report

Orbit 18710

Creation date: 2024-06-27T17:53:47.241063
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_165T07_9000002796_18710cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18710cztM0_level2_quad_clean.evt
Size (bytes)494,835,84078,376,320
Size471.9 MB 74.7 MB
Events in quadrant A2,915,801493,362
Events in quadrant B2,974,879503,690
Events in quadrant C5,078,131472,180
Events in quadrant D3,595,834470,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125801
B0126931
C0195801
D0147561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6206310.499517%
B6207330.531658%
C62071913.077171%
D62071262.029966%

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 7131 6207 0 0 0.00% 0.00%
B 7132 6208 0 0 0.00% 0.00%
C 7132 6207 40 40 0.56% 0.64%
D 7132 6208 101 101 1.42% 1.63%

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 14 111 11440 70.06 749 734 152.8
A 0 13 9339 56.31 749 734 152.8
A 13 254 8350 49.84 749 734 152.8
B 12 111 17323 114.47 747 728 145.0
B 3 64 17049 112.58 747 728 145.0
B 11 111 15346 100.83 747 728 145.0
C 3 233 2147120 12725.28 721 725 168.7
C 14 238 110800 652.6 721 725 168.7
C 9 54 10008 55.04 721 725 168.7
D 1 52 554789 3096.76 733 712 178.9
D 7 238 230138 1282.27 733 712 178.9
D 2 234 26442 143.81 733 712 178.9

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