ASTROSAT CZTI

Data Quality Report

Orbit 26218

Creation date: 2024-06-27T19:26:14.638032
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/AS1C05_019T04_9000003788_26218cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26218cztM0_level2_quad_clean.evt
Size (bytes)472,760,640128,718,720
Size450.9 MB 122.8 MB
Events in quadrant A3,199,206875,540
Events in quadrant B3,668,443875,489
Events in quadrant C3,369,935836,342
Events in quadrant D3,614,840834,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140730
B0154230
C0145800
D0155300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68331812.648910%
B68343364.916594%
C68342673.906936%
D68343204.682470%

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 7028 6835 0 0 0.00% 0.00%
B 7029 6836 139 139 1.98% 2.03%
C 7029 6836 30 30 0.43% 0.44%
D 7029 6836 161 161 2.29% 2.36%

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 11024 61.32 825 805 166.7
A 4 2 10777 59.84 825 805 166.7
A 3 137 7501 40.18 825 805 166.7
B 5 172 475424 3099.51 805 784 153.1
B 0 190 39927 255.61 805 784 153.1
B 12 111 18710 117.06 805 784 153.1
C 3 233 222507 1219.15 774 774 181.9
C 14 238 124212 678.7 774 774 181.9
C 2 16 6528 31.64 774 774 181.9
D 1 52 442917 2341.11 792 772 188.9
D 7 38 75217 394.18 792 772 188.9
D 12 233 47661 248.27 792 772 188.9

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