ASTROSAT CZTI

Data Quality Report

Orbit 20782

Creation date: 2024-06-27T18:19:31.887938
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_013T01_9000003070_20782cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20782cztM0_level2_quad_clean.evt
Size (bytes)1,629,671,040270,273,600
Size1.5 GB 257.8 MB
Events in quadrant A10,273,9511,724,391
Events in quadrant B11,308,3621,706,500
Events in quadrant C10,566,0701,659,247
Events in quadrant D15,703,6811,564,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050251
B049847
C050251
D050454

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500604705
B0534745589
C0510395121
D0696098109

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349
B0337
C0336
D0369

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22276990.444424%
B222872170.973662%
C222422030.912688%
D2213013336.023498%

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 31831 22638 0 0 0.00% 0.00%
B 31831 22613 59 59 0.19% 0.26%
C 31831 22589 2 2 0.01% 0.01%
D 31831 22426 1028 1028 3.23% 4.58%

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 0 226 23077 38.45 2666 2607 532.4
A 3 137 21462 35.42 2666 2607 532.4
A 13 252 19257 31.27 2666 2607 532.4
B 7 220 399983 803.22 2644 2579 494.8
B 0 219 183531 365.73 2644 2579 494.8
B 3 64 92161 181.06 2644 2579 494.8
C 14 238 400647 678.33 2545 2563 586.9
C 9 54 211477 355.99 2545 2563 586.9
C 7 247 30236 47.15 2545 2563 586.9
D 1 20 2449465 4076.08 2498 2426 600.3
D 1 239 1858430 3091.58 2498 2426 600.3
D 1 52 1235591 2054.11 2498 2426 600.3

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