ASTROSAT CZTI

Data Quality Report

Orbit 11574

Creation date: 2024-06-27T16:15:18.426396
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/AS1A04_137T01_9000001700_11574cztM0_level2.evt modeM0/AS1A04_137T01_9000001700_11574cztM0_level2_quad_clean.evt
Size (bytes)430,433,28054,411,840
Size410.5 MB 51.9 MB
Events in quadrant A3,860,352318,914
Events in quadrant B3,463,131314,943
Events in quadrant C2,285,975340,444
Events in quadrant D3,084,538320,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149162
B0135731
C0102031
D0126591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50253015.990050%
B50253557.064677%
C5025200.398010%
D50251132.248756%

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 5986 5027 146 146 2.44% 2.90%
B 5986 5027 219 219 3.66% 4.36%
C 5986 5027 0 0 0.00% 0.00%
D 5986 5027 88 88 1.47% 1.75%

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 8 5 1345788 11174.41 584 572 120.4
A 1 162 76561 631.22 584 572 120.4
A 1 178 48885 401.33 584 572 120.4
B 3 64 396291 3486.59 588 574 113.5
B 4 239 391406 3443.55 588 574 113.5
B 15 255 296949 2611.31 588 574 113.5
C 13 61 4248 26.73 586 590 136.8
C 12 4 1859 9.27 586 590 136.8
C 7 247 1336 5.45 586 590 136.8
D 13 152 437374 3140.06 579 562 139.1
D 10 253 331642 2379.99 579 562 139.1
D 2 120 42257 299.73 579 562 139.1

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