ASTROSAT CZTI

Data Quality Report

Orbit 39185

Creation date: 2024-06-27T22:01:30.927640
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/AS1A12_054T02_9000005444_39185cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39185cztM0_level2_quad_clean.evt
Size (bytes)1,262,638,080209,232,000
Size1.2 GB 199.5 MB
Events in quadrant A7,017,2161,595,234
Events in quadrant B6,376,7781,608,435
Events in quadrant C6,528,0051,499,609
Events in quadrant D25,798,082723,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284234
B0277513
C0274343
D0856753

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13159370.281176%
B131591070.813132%
C13159600.455962%
D13159728355.346151%

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 18836 13162 25 25 0.13% 0.19%
B 18836 13162 79 79 0.42% 0.60%
C 18836 13162 36 36 0.19% 0.27%
D 18836 13162 6184 6184 32.83% 46.98%

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 10 83 894050 2951.34 1520 1495 302.4
A 2 79 196372 644.38 1520 1495 302.4
A 13 6 42340 135.06 1520 1495 302.4
B 5 184 395027 1408.58 1487 1448 279.4
B 0 245 45097 156.22 1487 1448 279.4
B 15 85 39338 135.6 1487 1448 279.4
C 15 214 544408 1632.55 1447 1456 332.6
C 9 187 326622 977.71 1447 1456 332.6
C 0 10 10813 28.13 1447 1456 332.6
D 12 235 19401729 67454.53 1177 1144 287.6
D 2 249 1189317 4131.2 1177 1144 287.6
D 12 227 271836 941.18 1177 1144 287.6

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