ASTROSAT CZTI

Data Quality Report

Orbit 21253

Creation date: 2024-06-27T18:25:29.687191
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_037T01_9000003140_21253cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21253cztM0_level2_quad_clean.evt
Size (bytes)561,945,600101,016,000
Size535.9 MB 96.3 MB
Events in quadrant A3,635,560641,959
Events in quadrant B3,702,119652,345
Events in quadrant C3,559,777635,272
Events in quadrant D5,609,089604,294

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156752
B0159262
C0154982
D0217322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7546600.795123%
B7546821.086668%
C7546881.166181%
D75463214.253909%

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 7781 7547 1 1 0.01% 0.01%
B 7781 7548 2 2 0.03% 0.03%
C 7781 7548 0 0 0.00% 0.00%
D 7781 7548 234 234 3.01% 3.10%

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 15 236 65494 349.24 914 895 185.0
A 5 16 23561 122.54 914 895 185.0
A 13 254 12399 62.19 914 895 185.0
B 0 245 51305 284.38 915 892 177.3
B 0 230 24144 131.17 915 892 177.3
B 12 111 20707 111.78 915 892 177.3
C 14 238 136062 661.03 874 877 204.5
C 8 128 6337 26.7 874 877 204.5
C 13 61 6152 25.79 874 877 204.5
D 13 174 1347534 6281.46 874 850 214.4
D 1 20 200437 930.95 874 850 214.4
D 13 153 152235 706.12 874 850 214.4

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