ASTROSAT CZTI

Data Quality Report

Orbit 00371

Creation date: 2024-06-27T13:59:07.551365
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/AS1P01_162T05_9000000052_00371cztM0_level2.evt modeM0/AS1P01_162T05_9000000052_00371cztM0_level2_quad_clean.evt
Size (bytes)781,698,24029,136,960
Size745.5 MB 27.8 MB
Events in quadrant A4,797,315165,755
Events in quadrant B9,715,544121,629
Events in quadrant C4,409,194163,041
Events in quadrant D4,498,617161,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015678
B015678
C015678
D015678

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04623
B04623
C04623
D04623

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03388816945
B06383231917
C03161415808
D03215016076

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A380880.210084%
B3808229260.189076%
C380860.157563%
D3808120.315126%

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 6053 3809 112 112 1.85% 2.94%
B 6053 3809 2722 2722 44.97% 71.46%
C 6053 3809 69 69 1.14% 1.81%
D 6053 3809 82 82 1.35% 2.15%

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 0 238 99169 371.95 1169 1157 263.5
A 12 247 69070 257.73 1169 1157 263.5
A 15 127 46588 172.41 1169 1157 263.5
B 2 2 5883857 25498.69 971 977 230.7
B 4 251 36692 154.8 971 977 230.7
B 0 207 22376 92.75 971 977 230.7
C 1 1 73380 238.25 1084 1126 303.3
C 3 159 48428 155.97 1084 1126 303.3
C 9 68 20721 64.61 1084 1126 303.3
D 7 85 141430 418.68 1056 1098 335.2
D 1 5 113319 334.81 1056 1098 335.2
D 13 223 47786 139.29 1056 1098 335.2

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