ASTROSAT CZTI

Data Quality Report

Orbit 27959

Creation date: 2024-06-27T19:46:26.372695
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/AS1A10_021T02_9000004036_27959cztM0_level2.evt modeM0/AS1A10_021T02_9000004036_27959cztM0_level2_quad_clean.evt
Size (bytes)1,140,439,680192,801,600
Size1.1 GB 183.9 MB
Events in quadrant A6,332,2561,277,808
Events in quadrant B7,902,9571,284,349
Events in quadrant C6,503,2411,225,683
Events in quadrant D12,909,1861,139,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274970
B0321520
C0276720
D0474140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132021451.098318%
B132031871.416345%
C132021681.272534%
D13202140310.627178%

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 14912 13205 110 110 0.74% 0.83%
B 14913 13205 21 21 0.14% 0.16%
C 14912 13205 28 28 0.19% 0.21%
D 14912 13202 1317 1317 8.83% 9.98%

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 6 16 258097 811.3 1570 1537 316.2
A 13 254 21881 64.33 1570 1537 316.2
A 8 192 19277 56.1 1570 1537 316.2
B 10 245 1661474 5598.98 1565 1522 296.5
B 12 111 37022 119.74 1565 1522 296.5
B 11 111 33275 107.1 1565 1522 296.5
C 14 238 243260 679.99 1519 1527 355.5
C 2 16 175498 489.38 1519 1527 355.5
C 15 208 82408 227.52 1519 1527 355.5
D 1 52 3484826 9922.05 1469 1428 351.1
D 7 80 2203884 6273.44 1469 1428 351.1
D 8 195 591683 1681.27 1469 1428 351.1

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