ASTROSAT CZTI

Data Quality Report

Orbit 33715

Creation date: 2024-06-27T20:52:09.871617
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/AS1T04_088T01_9000004814_33715cztM0_level2.evt modeM0/AS1T04_088T01_9000004814_33715cztM0_level2_quad_clean.evt
Size (bytes)134,861,76025,822,080
Size128.6 MB 24.6 MB
Events in quadrant A764,053172,479
Events in quadrant B844,479178,240
Events in quadrant C801,558179,102
Events in quadrant D1,584,899155,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030571
B033481
C031141
D056221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1276524.075235%
B1276362.821317%
C1276292.272727%
D127617613.793103%

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 1276 1276 43 43 3.37% 3.37%
B 1276 1276 19 19 1.49% 1.49%
C 1276 1276 22 22 1.72% 1.72%
D 1276 1276 187 187 14.66% 14.66%

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 15 237 160555 4973.38 154 151 32.3
A 10 83 4002 119.4 154 151 32.3
A 13 6 3794 112.95 154 151 32.3
B 5 172 109935 3443.03 159 154 31.9
B 4 170 55491 1735.52 159 154 31.9
B 5 255 24435 761.52 159 154 31.9
C 0 10 91303 2386.85 158 159 38.2
C 15 214 61515 1606.77 158 159 38.2
C 14 67 16776 435.16 158 159 38.2
D 1 52 330443 8129.29 145 142 40.6
D 7 38 235317 5788.07 145 142 40.6
D 2 120 152289 3744.61 145 142 40.6

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