ASTROSAT CZTI

Data Quality Report

Orbit 09334

Creation date: 2024-06-27T15:44:59.152780
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/AS1G07_076T02_9000001320_09334cztM0_level2.evt modeM0/AS1G07_076T02_9000001320_09334cztM0_level2_quad_clean.evt
Size (bytes)1,029,369,600168,312,960
Size981.7 MB 160.5 MB
Events in quadrant A7,935,9141,133,116
Events in quadrant B5,751,8861,141,622
Events in quadrant C6,200,1221,096,605
Events in quadrant D10,511,200931,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315692
B0247012
C0263562
D0392352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114782552.221641%
B114781461.271999%
C114782562.230354%
D11478212318.496254%

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 13608 11479 47 47 0.35% 0.41%
B 13608 11480 9 9 0.07% 0.08%
C 13608 11480 116 116 0.85% 1.01%
D 13608 11480 1852 1852 13.61% 16.13%

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 8 5 2346652 8345.47 1393 1366 281.0
A 1 162 81811 286.26 1393 1366 281.0
A 15 174 63322 220.46 1393 1366 281.0
B 0 214 115363 431.03 1388 1358 264.5
B 10 245 62959 232.9 1388 1358 264.5
B 0 187 49062 180.36 1388 1358 264.5
C 4 254 991951 3222.06 1326 1333 307.4
C 8 128 12655 36.83 1326 1333 307.4
C 13 61 10140 28.65 1326 1333 307.4
D 1 52 4394611 14720.69 1212 1182 298.5
D 7 71 1039857 3480.2 1212 1182 298.5
D 12 233 186359 620.46 1212 1182 298.5

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