ASTROSAT CZTI

Data Quality Report

Orbit 08817

Creation date: 2024-06-27T15:37:37.692206
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/AS1A03_135T01_9000001226_08817cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08817cztM0_level2_quad_clean.evt
Size (bytes)777,588,480157,423,680
Size741.6 MB 150.1 MB
Events in quadrant A5,684,7801,030,984
Events in quadrant B6,161,6511,008,939
Events in quadrant C5,013,760995,593
Events in quadrant D5,946,501973,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02377438
B02544122
C02251029
D02510343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10956940.857977%
B109632672.435465%
C10959370.337622%
D10951800.730527%

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 19666 10973 11 11 0.06% 0.10%
B 19666 10972 186 186 0.95% 1.70%
C 19666 10973 1 1 0.01% 0.01%
D 19666 10972 50 50 0.25% 0.46%

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 8 5 424769 1569.04 1340 1316 269.9
A 15 174 42761 153.57 1340 1316 269.9
A 13 251 20449 70.89 1340 1316 269.9
B 10 16 858824 3383.09 1324 1293 253.5
B 0 214 108309 422.19 1324 1293 253.5
B 4 173 26581 99.77 1324 1293 253.5
C 9 68 16279 51.01 1277 1288 293.9
C 13 61 9809 28.99 1277 1288 293.9
C 12 4 9155 26.77 1277 1288 293.9
D 2 152 318832 936.37 1281 1253 339.2
D 5 233 251246 737.1 1281 1253 339.2
D 7 71 238850 700.55 1281 1253 339.2

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