ASTROSAT CZTI

Data Quality Report

Orbit 27984

Creation date: 2024-06-27T19:46:44.698018
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/AS1A10_065T03_9000004040_27984cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27984cztM0_level2_quad_clean.evt
Size (bytes)530,498,880103,576,320
Size505.9 MB 98.8 MB
Events in quadrant A3,574,823686,751
Events in quadrant B3,629,112674,770
Events in quadrant C3,666,128629,543
Events in quadrant D4,704,559641,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150930
B0152920
C0155020
D0185530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7245640.883368%
B72461211.669887%
C72461161.600883%
D72461522.097709%

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 7440 7247 0 0 0.00% 0.00%
B 7441 7248 1 1 0.01% 0.01%
C 7441 7248 5 5 0.07% 0.07%
D 7441 7247 115 115 1.55% 1.59%

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 13 254 10491 51.11 925 908 187.5
A 3 137 9290 44.7 925 908 187.5
A 0 226 7784 36.67 925 908 187.5
B 12 111 22584 123.6 907 884 175.6
B 11 111 20465 111.53 907 884 175.6
B 14 111 19873 108.16 907 884 175.6
C 14 238 139025 678.23 868 873 203.7
C 10 22 85563 415.77 868 873 203.7
C 3 233 59946 290.01 868 873 203.7
D 1 52 997593 4729.81 880 856 210.7
D 8 195 261746 1238.0 880 856 210.7
D 7 80 95933 451.17 880 856 210.7

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