ASTROSAT CZTI

Data Quality Report

Orbit 44556

Creation date: 2024-06-27T23:03:58.904217
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/AS1A13_003T01_9000006002_44556cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44556cztM0_level2_quad_clean.evt
Size (bytes)527,353,920106,574,400
Size502.9 MB 101.6 MB
Events in quadrant A5,355,674710,216
Events in quadrant B4,228,506712,404
Events in quadrant C3,359,600715,368
Events in quadrant D6,050,076615,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215282
B0171222
C0147662
D02270911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67942844.180159%
B67943895.725640%
C6794741.089196%
D67926209.128386%

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 7729 6795 185 185 2.39% 2.72%
B 7729 6795 315 315 4.08% 4.64%
C 7729 6795 46 46 0.60% 0.68%
D 7729 6794 470 470 6.08% 6.92%

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 10 83 1920596 12462.4 745 731 154.1
A 9 191 433745 2810.82 745 731 154.1
A 13 248 113309 730.78 745 731 154.1
B 5 235 901034 6204.12 735 712 145.1
B 5 255 158150 1084.91 735 712 145.1
B 4 171 112282 768.83 735 712 145.1
C 14 254 256209 1452.01 743 746 175.9
C 15 208 112423 634.75 743 746 175.9
C 3 233 39721 221.53 743 746 175.9
D 13 174 1724551 9478.85 719 700 181.9
D 2 249 894472 4914.54 719 700 181.9
D 13 171 297426 1631.59 719 700 181.9

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