ASTROSAT CZTI

Data Quality Report

Orbit 14968

Creation date: 2024-06-27T17:01:56.337322
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_056T01_9000002210_14968cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14968cztM0_level2_quad_clean.evt
Size (bytes)506,318,40095,598,720
Size482.9 MB 91.2 MB
Events in quadrant A3,861,443623,642
Events in quadrant B3,586,236629,569
Events in quadrant C3,301,616609,582
Events in quadrant D4,146,360582,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154583
B0145372
C0136572
D0165712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64522233.456293%
B64521702.634842%
C6452851.317421%
D64523665.672660%

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 7558 6453 66 66 0.87% 1.02%
B 7558 6453 26 26 0.34% 0.40%
C 7558 6454 0 0 0.00% 0.00%
D 7558 6453 221 221 2.92% 3.42%

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 13 248 292639 1734.69 832 813 168.2
A 1 162 123886 731.58 832 813 168.2
A 12 189 85343 502.47 832 813 168.2
B 3 64 189377 1199.62 824 803 157.2
B 0 229 55193 346.0 824 803 157.2
B 10 16 53059 332.43 824 803 157.2
C 3 233 140271 763.9 795 799 182.6
C 7 247 51415 277.23 795 799 182.6
C 10 22 9416 47.2 795 799 182.6
D 7 223 997306 5200.53 797 775 191.6
D 13 249 38375 196.22 797 775 191.6
D 7 38 26229 132.83 797 775 191.6

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