ASTROSAT CZTI

Data Quality Report

Orbit 24587

Creation date: 2024-06-27T19:07:35.067960
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/AS1T03_183T01_9000003610_24587cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24587cztM0_level2_quad_clean.evt
Size (bytes)549,823,68099,607,680
Size524.4 MB 95.0 MB
Events in quadrant A2,768,632676,603
Events in quadrant B3,336,002681,385
Events in quadrant C5,965,595612,391
Events in quadrant D4,174,680626,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122061
B0138151
C0219591
D0164491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005400.666112%
B60061843.063603%
C600660210.023310%
D6006671.115551%

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 6230 6007 0 0 0.00% 0.00%
B 6231 6008 79 79 1.27% 1.31%
C 6231 6008 212 212 3.40% 3.53%
D 6231 6008 7 7 0.11% 0.12%

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 13 254 9808 62.98 716 699 144.6
A 3 137 6568 40.58 716 699 144.6
A 0 226 6282 38.6 716 699 144.6
B 3 64 517594 3765.83 710 692 137.3
B 0 190 29901 212.8 710 692 137.3
B 12 111 16495 115.13 710 692 137.3
C 7 247 2792496 18087.75 665 668 154.3
C 2 16 454283 2938.89 665 668 154.3
C 14 238 106024 682.58 665 668 154.3
D 8 195 1418221 8415.66 688 666 168.4
D 1 52 135171 798.52 688 666 168.4
D 2 234 26784 155.06 688 666 168.4

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