ASTROSAT CZTI

Data Quality Report

Orbit 25766

Creation date: 2024-06-27T19:21:15.895203
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_147T01_9000003754_25766cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25766cztM0_level2_quad_clean.evt
Size (bytes)708,249,600106,974,720
Size675.4 MB 102.0 MB
Events in quadrant A3,193,942778,586
Events in quadrant B3,332,310801,909
Events in quadrant C3,309,799759,093
Events in quadrant D11,197,993470,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132410
B0136420
C0134510
D0375640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137861.401336%
B61381242.020202%
C61381272.069078%
D6137339055.238716%

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 8907 6138 0 0 0.00% 0.00%
B 8908 6139 1 1 0.01% 0.02%
C 8908 6139 3 3 0.03% 0.05%
D 8907 6137 3279 3279 36.81% 53.43%

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 9763 54.31 827 812 164.8
A 0 226 7047 37.83 827 812 164.8
A 3 137 6990 37.49 827 812 164.8
B 0 190 61311 391.0 830 812 154.7
B 12 111 17724 109.3 830 812 154.7
B 11 111 16038 98.4 830 812 154.7
C 14 238 131828 702.76 803 808 186.4
C 3 233 32290 168.86 803 808 186.4
C 15 127 20605 106.19 803 808 186.4
D 12 2 7232379 50597.63 602 588 142.9
D 1 52 761817 5325.98 602 588 142.9
D 7 80 495496 3462.65 602 588 142.9

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