ASTROSAT CZTI

Data Quality Report

Orbit 15431

Creation date: 2024-06-27T17:08:26.441091
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/AS1T02_080T01_9000002276_15431cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15431cztM0_level2_quad_clean.evt
Size (bytes)525,528,000110,220,480
Size501.2 MB 105.1 MB
Events in quadrant A3,388,927733,749
Events in quadrant B3,408,881744,527
Events in quadrant C4,094,731727,353
Events in quadrant D4,582,948679,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142110
B0141360
C0166550
D0180130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64851051.619121%
B6486951.464693%
C6486741.140919%
D64853815.875096%

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 7625 6485 12 12 0.16% 0.19%
B 7626 6487 7 7 0.09% 0.11%
C 7626 6487 2 2 0.03% 0.03%
D 7625 6486 290 290 3.80% 4.47%

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 14 238 161851 964.79 820 803 166.9
A 14 237 64423 381.13 820 803 166.9
A 9 143 14019 79.17 820 803 166.9
B 3 209 37834 242.68 815 798 152.6
B 4 142 35393 226.69 815 798 152.6
B 0 229 34903 223.48 815 798 152.6
C 3 233 942026 5289.17 781 787 178.0
C 7 247 81682 454.58 781 787 178.0
C 10 22 22029 119.37 781 787 178.0
D 1 52 712662 3758.06 777 756 189.4
D 13 122 651492 3435.15 777 756 189.4
D 5 222 106182 556.53 777 756 189.4

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