ASTROSAT CZTI

Data Quality Report

Orbit 22720

Creation date: 2024-06-27T18:44:48.379339
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/AS1A08_007T01_9000003362_22720cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22720cztM0_level2_quad_clean.evt
Size (bytes)780,036,480153,498,240
Size743.9 MB 146.4 MB
Events in quadrant A5,264,399982,894
Events in quadrant B5,495,104991,260
Events in quadrant C5,375,146948,675
Events in quadrant D6,712,631933,473

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233152
B0237612
C0234492
D0280302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11461440.383911%
B11460730.636998%
C11460970.846422%
D114602672.329843%

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 11986 11463 0 0 0.00% 0.00%
B 11985 11462 4 4 0.03% 0.03%
C 11985 11462 2 2 0.02% 0.02%
D 11985 11462 146 146 1.22% 1.27%

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 13 254 21833 74.75 1360 1333 274.2
A 0 226 11754 38.0 1360 1333 274.2
A 3 1 11691 37.77 1360 1333 274.2
B 0 219 35312 134.06 1356 1322 253.5
B 0 190 34955 132.65 1356 1322 253.5
B 0 228 34702 131.66 1356 1322 253.5
C 14 238 203711 666.93 1303 1311 303.5
C 10 23 42285 135.01 1303 1311 303.5
C 10 22 33730 106.82 1303 1311 303.5
D 1 52 865566 2712.42 1313 1275 318.6
D 12 233 398534 1246.72 1313 1275 318.6
D 7 238 167391 521.32 1313 1275 318.6

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