ASTROSAT CZTI

Data Quality Report

Orbit 36254

Creation date: 2022-06-13T14:15:55.528209
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/AS1A10_071T37_9000005180_36254cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36254cztM0_level2_quad_clean.evt
Size (bytes)571,080,96088,594,560
Size544.6 MB 84.5 MB
Events in quadrant A3,161,837574,543
Events in quadrant B4,547,691572,100
Events in quadrant C3,720,675566,639
Events in quadrant D5,419,573511,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134563
B0177082
C0148792
D0204262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6564160.243754%
B65644066.185253%
C65641241.889092%
D65645688.653260%

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 9221 6566 0 0 0.00% 0.00%
B 9221 6566 314 314 3.41% 4.78%
C 9221 6566 93 93 1.01% 1.42%
D 9221 6566 528 528 5.73% 8.04%

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 194031 1241.56 765 747 155.7
A 13 254 12166 73.35 765 747 155.7
A 3 137 8384 49.05 765 747 155.7
B 5 172 1121291 7804.3 738 718 143.6
B 5 236 262873 1825.8 738 718 143.6
B 4 232 105536 730.01 738 718 143.6
C 0 10 340595 1951.8 739 742 174.1
C 15 214 273403 1565.91 739 742 174.1
C 0 207 228144 1305.99 739 742 174.1
D 12 6 1975510 11191.45 717 698 176.5
D 13 171 207465 1171.77 717 698 176.5
D 12 227 98768 555.77 717 698 176.5

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