ASTROSAT CZTI

Data Quality Report

Orbit 16991

Creation date: 2024-06-27T17:30:21.727446
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_143T01_9000002524_16991cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16991cztM0_level2_quad_clean.evt
Size (bytes)556,637,760108,979,200
Size530.9 MB 103.9 MB
Events in quadrant A4,328,762703,405
Events in quadrant B3,601,019742,696
Events in quadrant C3,935,995712,946
Events in quadrant D4,543,858680,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172272
B0149242
C0161832
D0180062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66144857.332930%
B6614410.619897%
C6614741.118839%
D66142453.704264%

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 7890 6616 403 403 5.11% 6.09%
B 7890 6616 3 3 0.04% 0.05%
C 7890 6616 0 0 0.00% 0.00%
D 7890 6616 152 152 1.93% 2.30%

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 15 174 1249287 7831.65 800 785 159.4
A 0 226 7190 40.18 800 785 159.4
A 12 194 5897 32.07 800 785 159.4
B 3 64 116084 729.05 850 830 158.1
B 0 229 70559 441.08 850 830 158.1
B 0 197 21111 128.29 850 830 158.1
C 3 233 589509 3076.9 826 834 191.3
C 14 238 128222 665.84 826 834 191.3
C 13 61 5803 25.97 826 834 191.3
D 1 52 1397074 7106.84 810 786 196.5
D 7 223 39472 196.9 810 786 196.5
D 2 152 26321 129.97 810 786 196.5

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