ASTROSAT CZTI

Data Quality Report

Orbit 35449

Creation date: 2022-04-21T11:53:51.016406
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/AS1A11_068T03_9000005076_35449cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35449cztM0_level2_quad_clean.evt
Size (bytes)462,916,80063,216,000
Size441.5 MB 60.3 MB
Events in quadrant A2,680,558399,887
Events in quadrant B4,542,337400,854
Events in quadrant C3,232,568388,050
Events in quadrant D3,217,897367,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109323
B0170842
C0124762
D0127942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5104210.411442%
B51042875.623041%
C51041953.820533%
D51041442.821317%

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 7106 5105 10 10 0.14% 0.20%
B 7106 5105 151 151 2.12% 2.96%
C 7106 5105 154 154 2.17% 3.02%
D 7106 5105 105 105 1.48% 2.06%

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 10 83 121210 943.98 637 625 127.7
A 9 143 73439 570.01 637 625 127.7
A 13 6 20680 157.0 637 625 127.7
B 4 251 1543768 12816.7 631 616 120.4
B 5 236 251235 2081.52 631 616 120.4
B 5 172 78965 650.73 631 616 120.4
C 0 10 357398 2544.51 609 614 140.2
C 15 214 207514 1475.57 609 614 140.2
C 9 69 159973 1136.52 609 614 140.2
D 13 249 519245 3514.77 605 590 147.6
D 8 195 65949 442.92 605 590 147.6
D 7 80 47124 315.35 605 590 147.6

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