ASTROSAT CZTI

Data Quality Report

Orbit 37486

Creation date: 2024-06-27T21:40:38.774279
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/AS1C07_001T11_9000005326_37486cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37486cztM0_level2_quad_clean.evt
Size (bytes)513,789,120101,897,280
Size490.0 MB 97.2 MB
Events in quadrant A3,769,724688,597
Events in quadrant B3,776,625679,838
Events in quadrant C3,132,332678,424
Events in quadrant D4,497,064642,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151203
B0151372
C0128832
D0172062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5679250.440218%
B56792724.789576%
C56791212.130657%
D56794377.695017%

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 7232 5680 7 7 0.10% 0.12%
B 7232 5680 161 161 2.23% 2.83%
C 7232 5680 116 116 1.60% 2.04%
D 7232 5680 430 430 5.95% 7.57%

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 15 222 922692 7157.2 632 619 128.8
A 10 83 326381 2528.59 632 619 128.8
A 12 189 20596 155.06 632 619 128.8
B 5 172 389225 3274.51 618 603 118.7
B 5 255 258860 2176.06 618 603 118.7
B 15 35 233573 1962.99 618 603 118.7
C 15 214 244685 1706.4 613 615 143.0
C 14 254 226213 1577.26 613 615 143.0
C 0 10 137154 954.61 613 615 143.0
D 13 249 830514 5634.0 604 588 147.3
D 5 32 385383 2612.2 604 588 147.3
D 2 250 352958 2392.08 604 588 147.3

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