ASTROSAT CZTI

Data Quality Report

Orbit 35536

Creation date: 2022-04-25T10:55:21.489534
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/AS1A11_097T09_9000005086_35536cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35536cztM0_level2_quad_clean.evt
Size (bytes)411,474,24067,728,960
Size392.4 MB 64.6 MB
Events in quadrant A2,550,510434,256
Events in quadrant B2,841,602436,452
Events in quadrant C3,077,580425,810
Events in quadrant D3,648,895400,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106563
B0115202
C0121562
D0142032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504360.118977%
B50431162.300218%
C50431072.121753%
D50431593.152885%

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 7076 5044 0 0 0.00% 0.00%
B 7076 5044 77 77 1.09% 1.53%
C 7076 5044 81 81 1.14% 1.61%
D 7076 5044 155 155 2.19% 3.07%

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 129454 1030.06 622 612 125.1
A 15 169 14301 109.44 622 612 125.1
A 13 6 7864 57.98 622 612 125.1
B 5 236 251028 2149.37 615 601 116.5
B 5 172 115517 986.3 615 601 116.5
B 5 255 22082 184.37 615 601 116.5
C 0 10 382128 2733.43 603 609 139.6
C 15 214 227317 1624.27 603 609 139.6
C 0 207 68787 488.47 603 609 139.6
D 12 235 880268 6076.71 595 580 144.8
D 2 250 131920 907.27 595 580 144.8
D 8 195 109044 749.25 595 580 144.8

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