ASTROSAT CZTI

Data Quality Report

Orbit 33470

Creation date: 2024-06-27T20:49:10.505951
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/AS1A11_047T10_9000004802_33470cztM0_level2.evt modeM0/AS1A11_047T10_9000004802_33470cztM0_level2_quad_clean.evt
Size (bytes)461,704,32063,167,040
Size440.3 MB 60.2 MB
Events in quadrant A2,448,412394,149
Events in quadrant B3,692,209389,670
Events in quadrant C2,895,067386,478
Events in quadrant D4,581,504365,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108003
B0143512
C0116612
D0172692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538730.055690%
B53872204.083906%
C5387621.150919%
D53872644.900687%

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 7090 5388 0 0 0.00% 0.00%
B 7090 5388 177 177 2.50% 3.29%
C 7090 5388 56 56 0.79% 1.04%
D 7090 5388 240 240 3.39% 4.45%

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 13 254 8880 65.35 629 616 126.5
A 7 192 6840 49.21 629 616 126.5
A 13 6 6138 43.66 629 616 126.5
B 5 172 516874 4383.24 615 601 117.8
B 4 171 200999 1701.41 615 601 117.8
B 5 255 157497 1332.07 615 601 117.8
C 15 214 235712 1683.32 604 609 139.7
C 14 254 156789 1118.24 604 609 139.7
C 0 10 110589 787.45 604 609 139.7
D 8 195 1307771 8840.17 598 579 147.9
D 2 249 355462 2399.97 598 579 147.9
D 2 250 226019 1524.58 598 579 147.9

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