ASTROSAT CZTI

Data Quality Report

Orbit 21117

Creation date: 2024-06-27T18:23:47.954864
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_104T05_9000003120_21117cztM0_level2.evt modeM0/AS1A05_104T05_9000003120_21117cztM0_level2_quad_clean.evt
Size (bytes)603,164,16093,490,560
Size575.2 MB 89.2 MB
Events in quadrant A3,178,346642,264
Events in quadrant B6,472,539575,319
Events in quadrant C3,173,453611,265
Events in quadrant D5,023,050569,201

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132870
B0232000
C0131730
D0192890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6201240.387034%
B6202141422.799097%
C6202480.773944%
D62012313.725206%

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 7521 6202 0 0 0.00% 0.00%
B 7522 6203 1091 1091 14.50% 17.59%
C 7522 6203 1 1 0.01% 0.02%
D 7521 6202 221 221 2.94% 3.56%

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 6 16 19642 116.7 814 801 161.4
A 15 192 15776 92.76 814 801 161.4
A 13 254 8571 48.13 814 801 161.4
B 0 182 3164983 22474.25 759 743 140.8
B 7 220 140704 994.08 759 743 140.8
B 3 64 97749 688.99 759 743 140.8
C 14 238 122829 676.44 781 788 180.4
C 13 61 5574 26.53 781 788 180.4
C 0 207 4364 19.82 781 788 180.4
D 1 20 767095 4128.69 772 751 185.6
D 5 222 664791 3577.53 772 751 185.6
D 1 239 267832 1438.9 772 751 185.6

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