ASTROSAT CZTI

Data Quality Report

Orbit 25440

Creation date: 2024-06-27T19:17:41.561819
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/AS1A09_085T02_9000003716_25440cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25440cztM0_level2_quad_clean.evt
Size (bytes)932,901,120153,146,880
Size889.7 MB 146.1 MB
Events in quadrant A5,921,118969,118
Events in quadrant B6,015,418973,863
Events in quadrant C6,662,688932,584
Events in quadrant D8,796,718886,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257210
B0258880
C0278190
D0344400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12665620.489538%
B12666840.663193%
C126662982.352755%
D126655484.326885%

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 13949 12665 0 0 0.00% 0.00%
B 13950 12666 1 1 0.01% 0.01%
C 13950 12666 149 149 1.07% 1.18%
D 13950 12666 494 494 3.54% 3.90%

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 18642 55.53 1534 1499 308.7
A 3 137 14633 42.55 1534 1499 308.7
A 0 226 13055 37.44 1534 1499 308.7
B 12 111 36322 120.46 1512 1471 289.3
B 0 229 35926 119.1 1512 1471 289.3
B 11 111 32457 107.1 1512 1471 289.3
C 9 54 759261 2244.22 1443 1449 337.7
C 14 238 231660 681.76 1443 1449 337.7
C 2 16 40483 115.6 1443 1449 337.7
D 7 238 1463968 4148.88 1447 1404 352.5
D 9 35 648834 1836.57 1447 1404 352.5
D 8 195 395217 1117.13 1447 1404 352.5

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