ASTROSAT CZTI

Data Quality Report

Orbit 06377

Creation date: 2024-06-27T15:06:20.746662
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/AS1A02_124T01_9000000842_06377cztM0_level2.evt modeM0/AS1A02_124T01_9000000842_06377cztM0_level2_quad_clean.evt
Size (bytes)1,452,513,600275,590,080
Size1.4 GB 262.8 MB
Events in quadrant A10,227,0931,722,439
Events in quadrant B10,990,5621,731,169
Events in quadrant C9,881,3271,696,785
Events in quadrant D11,372,0601,651,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460705
B0482544
C0456024
D0503754

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22453700.311762%
B224532210.984278%
C22453360.160335%
D224533721.656794%

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 24988 22457 21 21 0.08% 0.09%
B 24988 22457 52 52 0.21% 0.23%
C 24988 22457 8 8 0.03% 0.04%
D 24988 22457 273 273 1.09% 1.22%

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 15 236 228323 442.93 2531 2476 509.9
A 15 174 122122 234.65 2531 2476 509.9
A 8 15 90991 173.59 2531 2476 509.9
B 0 228 757753 1536.23 2560 2498 491.6
B 0 219 172582 345.96 2560 2498 491.6
B 4 81 56062 108.95 2560 2498 491.6
C 4 254 126354 216.3 2479 2488 572.7
C 8 128 27184 43.12 2479 2488 572.7
C 1 241 23064 35.93 2479 2488 572.7
D 4 95 1176688 1976.87 2452 2376 594.0
D 2 152 531256 890.33 2452 2376 594.0
D 11 241 209824 349.22 2452 2376 594.0

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