ASTROSAT CZTI

Data Quality Report

Orbit 33252

Creation date: 2024-06-27T20:46:40.335620
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_9000004778_33252cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33252cztM0_level2_quad_clean.evt
Size (bytes)224,107,20021,358,080
Size213.7 MB 20.4 MB
Events in quadrant A2,241,252129,241
Events in quadrant B1,648,240128,376
Events in quadrant C990,618130,952
Events in quadrant D1,775,999118,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080022
B061461
C041361
D065231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189455529.303062%
B189427514.519535%
C1894321.689546%
D18941517.972545%

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 3867 1895 332 332 8.59% 17.52%
B 3867 1895 201 201 5.20% 10.61%
C 3867 1895 26 26 0.67% 1.37%
D 3867 1895 133 133 3.44% 7.02%

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 15 169 1440594 33636.76 205 201 42.8
A 13 6 3140 68.63 205 201 42.8
A 13 254 2911 63.29 205 201 42.8
B 5 172 690250 16308.9 216 211 42.3
B 5 173 46782 1100.69 216 211 42.3
B 4 170 22233 520.48 216 211 42.3
C 0 10 117041 2228.99 221 222 52.4
C 14 254 5010 91.36 221 222 52.4
C 14 67 1642 27.09 221 222 52.4
D 2 250 462611 7759.7 218 212 59.6
D 8 195 386072 6475.27 218 212 59.6
D 13 249 38745 646.64 218 212 59.6

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