ASTROSAT CZTI

Data Quality Report

Orbit 38318

Creation date: 2024-06-27T21:51:12.786679
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/AS1C07_001T12_9000005372_38318cztM0_level2.fits modeM0/AS1C07_001T12_9000005372_38318cztM0_level2_quad_clean.evt
Size (bytes)477,521,28079,945,920
Size455.4 MB 76.2 MB
Events in quadrant A2,573,065594,852
Events in quadrant B2,327,208609,106
Events in quadrant C2,702,885590,776
Events in quadrant D9,698,069287,656

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106423
B0101342
C0108792
D0321332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4821110.228168%
B4821160.331881%
C4821691.431238%
D4821246751.171956%

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 6974 4822 6 6 0.09% 0.12%
B 6974 4822 6 6 0.09% 0.12%
C 6974 4822 72 72 1.03% 1.49%
D 6974 4822 2630 2630 37.71% 54.54%

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 376755 3440.01 544 532 109.4
A 12 189 37209 335.36 544 532 109.4
A 13 248 34795 313.28 544 532 109.4
B 0 229 44672 424.46 546 531 104.0
B 0 189 27380 258.18 546 531 104.0
B 0 183 26562 250.31 546 531 104.0
C 3 9 273686 2182.54 546 550 125.1
C 15 214 205564 1638.2 546 550 125.1
C 1 23 43047 339.58 546 550 125.1
D 10 203 5999560 52454.28 470 456 114.4
D 2 16 1244425 10876.87 470 456 114.4
D 13 138 347864 3037.63 470 456 114.4

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