ASTROSAT CZTI

Data Quality Report

Orbit 37276

Creation date: 2024-06-27T21:37:47.506788
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_103T03_9000005296_37276cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37276cztM0_level2_quad_clean.evt
Size (bytes)414,406,08076,550,400
Size395.2 MB 73.0 MB
Events in quadrant A2,761,268489,914
Events in quadrant B2,626,580496,984
Events in quadrant C2,779,147512,705
Events in quadrant D4,045,945470,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111083
B0108242
C0110832
D0153342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959240.483969%
B4959160.322646%
C4959731.472071%
D495961112.321032%

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 7082 4960 12 12 0.17% 0.24%
B 7082 4960 8 8 0.11% 0.16%
C 7082 4960 66 66 0.93% 1.33%
D 7082 4960 512 512 7.23% 10.32%

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 263837 2238.43 590 581 117.6
A 9 143 155800 1319.81 590 581 117.6
A 13 248 41439 347.41 590 581 117.6
B 0 213 181252 1633.29 584 571 110.6
B 0 190 75309 675.61 584 571 110.6
B 5 172 32226 286.15 584 571 110.6
C 0 10 231642 1747.97 575 581 132.2
C 15 214 212838 1605.72 575 581 132.2
C 14 254 48339 361.29 575 581 132.2
D 10 253 1389397 10606.89 547 534 130.9
D 13 249 142668 1085.49 547 534 130.9
D 12 218 140303 1067.43 547 534 130.9

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