ASTROSAT CZTI

Data Quality Report

Orbit 33750

Creation date: 2024-06-27T20:52:13.175937
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_037T01_9000004818_33750cztM0_level2.evt modeM0/AS1A11_037T01_9000004818_33750cztM0_level2_quad_clean.evt
Size (bytes)1,355,503,680207,976,320
Size1.3 GB 198.3 MB
Events in quadrant A8,468,7811,348,785
Events in quadrant B9,881,6011,353,938
Events in quadrant C8,259,5651,355,841
Events in quadrant D13,489,3681,263,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342153
B0385463
C0325323
D0498133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141553182.246556%
B141558345.891911%
C141551951.377605%
D141558886.273402%

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 16841 14157 288 288 1.71% 2.03%
B 16841 14156 623 623 3.70% 4.40%
C 16841 14157 190 190 1.13% 1.34%
D 16841 14157 869 869 5.16% 6.14%

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 14 4 1696630 5306.49 1620 1589 319.4
A 15 169 297377 925.99 1620 1589 319.4
A 15 237 151275 468.61 1620 1589 319.4
B 5 172 2720520 9048.78 1592 1551 300.5
B 0 189 284765 942.54 1592 1551 300.5
B 5 255 186973 617.09 1592 1551 300.5
C 9 187 624786 1708.21 1585 1598 364.8
C 15 214 612734 1675.18 1585 1598 364.8
C 3 233 424699 1159.76 1585 1598 364.8
D 8 195 3638766 8951.96 1550 1513 406.3
D 2 250 1242341 3053.91 1550 1513 406.3
D 12 233 938349 2305.73 1550 1513 406.3

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