ASTROSAT CZTI

Data Quality Report

Orbit 16139

Creation date: 2024-06-27T17:18:33.066248
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/AS1T02_092T01_9000002384_16139cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16139cztM0_level2_quad_clean.evt
Size (bytes)646,925,760101,301,120
Size617.0 MB 96.6 MB
Events in quadrant A3,440,283721,228
Events in quadrant B3,628,408711,767
Events in quadrant C3,162,801666,535
Events in quadrant D8,937,783531,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139032
B0146431
C0130901
D0308391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521262.015355%
B62521231.967370%
C6252921.471529%
D6252194431.094050%

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 7523 6254 38 38 0.51% 0.61%
B 7523 6254 21 21 0.28% 0.34%
C 7523 6254 1 1 0.01% 0.02%
D 7523 6254 1883 1883 25.03% 30.11%

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 15 174 175916 1083.31 816 801 161.6
A 15 223 89587 549.26 816 801 161.6
A 0 253 21485 127.96 816 801 161.6
B 0 189 136478 905.48 803 785 149.9
B 5 65 74169 489.69 803 785 149.9
B 7 220 63329 417.36 803 785 149.9
C 14 238 118822 666.32 763 769 177.2
C 3 233 40534 224.44 763 769 177.2
C 0 207 17253 93.04 763 769 177.2
D 1 52 5993737 35598.48 690 670 168.4
D 7 38 175726 1039.82 690 670 168.4
D 13 104 51396 301.31 690 670 168.4

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