ASTROSAT CZTI

Data Quality Report

Orbit 00550

Creation date: 2024-06-27T13:59:37.157585
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_015T01_9000000074_00550cztM0_level2.evt modeM0/AS1P01_015T01_9000000074_00550cztM0_level2_quad_clean.evt
Size (bytes)648,809,28031,884,480
Size618.8 MB 30.4 MB
Events in quadrant A5,109,584173,646
Events in quadrant B4,859,413171,153
Events in quadrant C4,605,768174,813
Events in quadrant D4,810,742165,796

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180292
B0172251
C0164871
D0171141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396160.151477%
B396120.050492%
C3961120.302954%
D3961270.681646%

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 6116 3962 135 135 2.21% 3.41%
B 6116 3962 63 63 1.03% 1.59%
C 6116 3962 72 72 1.18% 1.82%
D 6116 3962 103 103 1.68% 2.60%

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 63974 220.49 1278 1263 284.4
A 13 160 31316 105.67 1278 1263 284.4
A 14 79 27489 92.21 1278 1263 284.4
B 5 46 21207 68.59 1242 1250 291.0
B 8 4 20792 67.16 1242 1250 291.0
B 15 185 19685 63.36 1242 1250 291.0
C 3 159 84538 261.89 1144 1187 318.3
C 15 241 12027 34.06 1144 1187 318.3
C 9 206 7980 21.34 1144 1187 318.3
D 1 4 160713 457.26 1127 1168 348.9
D 13 221 80626 227.73 1127 1168 348.9
D 13 216 57864 162.49 1127 1168 348.9

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