ASTROSAT CZTI

Data Quality Report

Orbit 16975

Creation date: 2024-06-27T17:30:15.600846
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/AS1A05_188T01_9000002520_16975cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16975cztM0_level2_quad_clean.evt
Size (bytes)515,940,48099,578,880
Size492.0 MB 95.0 MB
Events in quadrant A3,094,284651,740
Events in quadrant B3,596,091661,289
Events in quadrant C3,740,514637,639
Events in quadrant D4,754,326612,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135412
B0149712
C0153092
D0184653

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487330.508710%
B64871973.036843%
C6487771.186989%
D64862764.255319%

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 7608 6489 11 11 0.14% 0.17%
B 7608 6489 90 90 1.18% 1.39%
C 7608 6489 0 0 0.00% 0.00%
D 7607 6488 216 216 2.84% 3.33%

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 15 174 89219 563.58 778 762 157.0
A 12 189 10606 62.72 778 762 157.0
A 0 226 6811 38.54 778 762 157.0
B 3 64 320115 2131.22 781 760 149.8
B 0 197 80332 531.03 781 760 149.8
B 4 216 30843 200.76 781 760 149.8
C 3 233 646039 3627.42 759 765 177.9
C 14 238 118904 664.12 759 765 177.9
C 0 207 17192 92.34 759 765 177.9
D 1 52 1908760 10521.61 745 723 181.3
D 2 234 25680 137.62 745 723 181.3
D 13 238 13945 72.91 745 723 181.3

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