ASTROSAT CZTI

Data Quality Report

Orbit 15425

Creation date: 2024-06-27T17:08:21.557389
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/AS1T02_080T01_9000002276_15425cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15425cztM0_level2_quad_clean.evt
Size (bytes)118,356,4806,606,720
Size112.9 MB 6.3 MB
Events in quadrant A847,20421,655
Events in quadrant B852,84721,948
Events in quadrant C885,49222,346
Events in quadrant D893,78421,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034122
B034191
C035621
D035811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1506312.058433%
B1506392.589641%
C1506332.191235%
D1506422.788845%

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 2607 1507 1 1 0.04% 0.07%
B 2607 1508 0 0 0.00% 0.00%
C 2607 1507 1 1 0.04% 0.07%
D 2607 1507 11 11 0.42% 0.73%

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 14 238 14986 334.31 211 207 44.2
A 14 237 11701 260.0 211 207 44.2
A 9 143 6296 137.74 211 207 44.2
B 4 173 6389 146.75 213 209 42.1
B 12 111 4625 104.86 213 209 42.1
B 0 189 4283 96.74 213 209 42.1
C 3 233 54679 1082.35 211 212 50.3
C 14 225 6011 115.24 211 212 50.3
C 13 61 1586 27.3 211 212 50.3
D 10 70 43295 844.38 207 201 51.0
D 13 122 37058 722.17 207 201 51.0
D 5 222 13958 269.55 207 201 51.0

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