ASTROSAT CZTI

Data Quality Report

Orbit 43975

Creation date: 2024-06-27T22:57:51.403204
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/AS1A13_065T06_9000005924_43975cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43975cztM0_level2_quad_clean.evt
Size (bytes)1,580,480,640314,164,800
Size1.5 GB 299.6 MB
Events in quadrant A19,891,4541,845,243
Events in quadrant B11,308,6652,163,838
Events in quadrant C10,535,6722,163,273
Events in quadrant D15,149,1611,896,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04280
C04280
D04280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0753576
B0480773
C0463903
D0594443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20939325615.549931%
B209409574.570201%
C209404682.234957%
D2094011115.305635%

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 25941 20944 2392 2392 9.22% 11.42%
B 25942 20945 337 337 1.30% 1.61%
C 25942 20945 148 148 0.57% 0.71%
D 25942 20945 702 702 2.71% 3.35%

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 15 223 7480655 16326.35 2202 2153 458.1
A 10 83 3118567 6803.46 2202 2153 458.1
A 14 238 471993 1025.71 2202 2153 458.1
B 5 172 1344531 2885.28 2342 2270 465.2
B 0 183 178752 379.36 2342 2270 465.2
B 15 36 165081 349.97 2342 2270 465.2
C 14 254 589959 1070.6 2331 2347 548.9
C 15 158 433329 785.23 2331 2347 548.9
C 15 157 167238 300.42 2331 2347 548.9
D 12 17 1590382 2686.18 2321 2249 591.2
D 5 235 1100172 1857.04 2321 2249 591.2
D 1 52 1090842 1841.26 2321 2249 591.2

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