ASTROSAT CZTI

Data Quality Report

Orbit 20476

Creation date: 2024-06-27T18:15:49.902318
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/AS1A05_208T03_9000003026_20476cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20476cztM0_level2_quad_clean.evt
Size (bytes)1,707,163,200316,667,520
Size1.6 GB 302.0 MB
Events in quadrant A13,354,0002,028,059
Events in quadrant B12,559,3382,055,971
Events in quadrant C10,784,5191,993,700
Events in quadrant D13,455,8011,935,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05520813
B0519814
C0468994
D0551314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04640
C04640
D04640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229377343.200070%
B229394331.887615%
C229393021.316535%
D229396032.628711%

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 25513 22937 141 141 0.55% 0.61%
B 25514 22939 130 130 0.51% 0.57%
C 25514 22939 1 1 0.00% 0.00%
D 25514 22939 329 329 1.29% 1.43%

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 14 111 2659710 4859.83 2704 2643 546.7
A 5 16 165946 298.68 2704 2643 546.7
A 9 143 75166 132.65 2704 2643 546.7
B 0 189 668909 1305.62 2708 2637 510.3
B 0 197 407115 792.61 2708 2637 510.3
B 7 220 234116 453.6 2708 2637 510.3
C 14 238 405275 658.39 2618 2627 611.6
C 3 9 132545 212.43 2618 2627 611.6
C 3 233 30005 44.77 2618 2627 611.6
D 1 52 771661 1197.87 2650 2576 642.0
D 5 222 653119 1013.24 2650 2576 642.0
D 7 38 378057 584.82 2650 2576 642.0

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