ASTROSAT CZTI

Data Quality Report

Orbit 41021

Creation date: 2024-06-27T22:23:21.944162
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_029T02_9000005590_41021cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41021cztM0_level2_quad_clean.evt
Size (bytes)340,997,76090,696,960
Size325.2 MB 86.5 MB
Events in quadrant A3,057,351613,495
Events in quadrant B2,516,800629,759
Events in quadrant C2,836,615596,067
Events in quadrant D3,781,425520,425

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122923
B0112382
C0117582
D0152132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5525110.199095%
B5525120.217195%
C5525460.832579%
D55253927.095023%

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 7228 5526 3 3 0.04% 0.05%
B 7228 5526 9 9 0.12% 0.16%
C 7228 5526 44 44 0.61% 0.80%
D 7228 5526 329 329 4.55% 5.95%

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 504115 3949.3 622 609 127.5
A 12 189 138193 1079.16 622 609 127.5
A 13 254 8061 58.45 622 609 127.5
B 0 190 78204 649.95 614 597 119.4
B 0 229 20974 170.66 614 597 119.4
B 12 111 15718 126.64 614 597 119.4
C 15 214 239290 1694.8 601 604 140.8
C 15 159 155370 1098.92 601 604 140.8
C 0 10 60435 424.83 601 604 140.8
D 13 249 1262212 8847.3 586 571 142.6
D 9 19 133007 928.71 586 571 142.6
D 5 32 35207 242.89 586 571 142.6

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