ASTROSAT CZTI

Data Quality Report

Orbit 22516

Creation date: 2024-06-27T18:42:11.727873
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_003T01_9000003342_22516cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22516cztM0_level2_quad_clean.evt
Size (bytes)1,824,168,960312,937,920
Size1.7 GB 298.4 MB
Events in quadrant A11,690,9721,966,505
Events in quadrant B12,823,1862,009,931
Events in quadrant C11,858,4821,937,907
Events in quadrant D17,193,4121,852,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511885
B0545095
C0513115
D0678115

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05060
C05060
D05060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248602721.094127%
B248606352.554304%
C248604431.781979%
D2485914025.639809%

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 26821 24863 0 0 0.00% 0.00%
B 26821 24861 103 103 0.38% 0.41%
C 26821 24863 0 0 0.00% 0.00%
D 26820 24862 1206 1206 4.50% 4.85%

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 38959 59.03 3030 2963 609.8
A 3 137 26725 38.97 3030 2963 609.8
A 0 226 26162 38.05 3030 2963 609.8
B 15 33 931963 1606.56 3009 2925 578.3
B 12 111 72141 119.69 3009 2925 578.3
B 11 111 63586 104.9 3009 2925 578.3
C 14 238 458252 662.92 2915 2933 686.8
C 0 10 27260 35.42 2915 2933 686.8
C 13 61 20143 25.06 2915 2933 686.8
D 1 52 5850235 8237.26 2901 2812 709.9
D 12 227 154528 213.72 2901 2812 709.9
D 2 234 104373 143.07 2901 2812 709.9

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