ASTROSAT CZTI

Data Quality Report

Orbit 19998

Creation date: 2024-06-27T18:09:52.842829
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/AS1A06_002T02_9000002982_19998cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19998cztM0_level2_quad_clean.evt
Size (bytes)463,029,12088,217,280
Size441.6 MB 84.1 MB
Events in quadrant A3,239,897564,569
Events in quadrant B3,105,835570,531
Events in quadrant C3,624,482544,561
Events in quadrant D3,615,425542,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138321
B0133142
C0149291
D0152411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439921.428793%
B6439741.149247%
C64391091.692809%
D64391872.904178%

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 7334 6440 28 28 0.38% 0.43%
B 7334 6440 11 11 0.15% 0.17%
C 7334 6440 14 14 0.19% 0.22%
D 7334 6440 126 126 1.72% 1.96%

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 14 238 179411 1149.46 768 752 155.4
A 13 252 79870 509.03 768 752 155.4
A 14 254 23292 145.02 768 752 155.4
B 7 220 74530 500.62 764 745 147.4
B 12 111 17963 116.82 764 745 147.4
B 11 111 15729 101.66 764 745 147.4
C 0 207 328480 1915.83 730 733 171.1
C 3 233 304441 1775.31 730 733 171.1
C 14 238 113255 657.74 730 733 171.1
D 1 52 598863 3340.16 733 711 179.1
D 12 218 142482 791.67 733 711 179.1
D 7 238 65206 360.15 733 711 179.1

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