ASTROSAT CZTI

Data Quality Report

Orbit 01105

Creation date: 2024-06-27T14:07:31.313356
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/AS1P01_997T02_9000000212_01105cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01105cztM0_level2_quad_clean.evt
Size (bytes)1,239,163,200110,741,760
Size1.2 GB 105.6 MB
Events in quadrant A8,969,675727,493
Events in quadrant B9,364,641727,544
Events in quadrant C9,073,943702,398
Events in quadrant D9,624,280675,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319252
B0331441
C0322761
D0339371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7485370.494322%
B7485150.200401%
C748520.026720%
D74854365.824983%

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 7715 7486 279 279 3.62% 3.73%
B 7715 7486 293 293 3.80% 3.91%
C 7715 7486 240 240 3.11% 3.21%
D 7715 7485 828 828 10.73% 11.06%

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 4 32 201601 362.38 2280 2298 550.0
A 12 243 23958 39.38 2280 2298 550.0
A 11 79 8746 11.72 2280 2298 550.0
B 0 137 106185 183.0 2394 2405 567.1
B 5 249 43576 72.6 2394 2405 567.1
B 2 32 30689 49.87 2394 2405 567.1
C 15 241 359361 585.08 2187 2262 610.3
C 10 207 63541 100.4 2187 2262 610.3
C 9 85 39602 61.18 2187 2262 610.3
D 2 216 210518 328.56 2156 2203 634.0
D 2 14 29853 43.61 2156 2203 634.0
D 2 25 27836 40.43 2156 2203 634.0

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