ASTROSAT CZTI

Data Quality Report

Orbit 26882

Creation date: 2024-06-27T19:34:01.147362
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/AS1T03_224T01_9000003872_26882cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26882cztM0_level2_quad_clean.evt
Size (bytes)603,492,48079,531,200
Size575.5 MB 75.8 MB
Events in quadrant A5,478,523481,399
Events in quadrant B4,104,083506,714
Events in quadrant C3,479,774492,886
Events in quadrant D4,772,171471,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206310
B0163260
C0140200
D0182420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65313184.869086%
B65322664.072260%
C65321852.832211%
D65323285.021433%

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 7506 6531 168 168 2.24% 2.57%
B 7507 6532 35 35 0.47% 0.54%
C 7507 6532 4 4 0.05% 0.06%
D 7507 6532 228 228 3.04% 3.49%

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 0 13 2188491 12851.14 854 839 170.2
A 13 254 9889 53.16 854 839 170.2
A 3 137 7768 40.7 854 839 170.2
B 3 64 658058 4078.77 851 831 161.1
B 0 190 91678 563.8 851 831 161.1
B 12 111 19300 114.62 851 831 161.1
C 14 238 134549 689.64 836 844 193.9
C 15 208 32882 165.25 836 844 193.9
C 3 233 26981 134.81 836 844 193.9
D 7 80 698943 3607.23 830 811 193.5
D 13 168 358626 1848.82 830 811 193.5
D 2 250 222057 1143.17 830 811 193.5

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