ASTROSAT CZTI

Data Quality Report

Orbit 14745

Creation date: 2024-06-27T16:59:00.046393
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_203T01_9000002180_14745cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14745cztM0_level2_quad_clean.evt
Size (bytes)2,987,501,760330,223,680
Size2.8 GB 314.9 MB
Events in quadrant A42,181,3761,874,947
Events in quadrant B16,281,5312,100,666
Events in quadrant C17,113,8032,054,428
Events in quadrant D13,002,6332,027,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01449026
B0666705
C0688525
D0587415

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28252880031.148237%
B2825211414.038652%
C282524731.674218%
D282521460.516778%

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 32293 28253 7481 7481 23.17% 26.48%
B 32293 28253 605 605 1.87% 2.14%
C 32293 28253 285 285 0.88% 1.01%
D 32293 28255 48 48 0.15% 0.17%

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 15 29783429 47271.44 3117 3049 630.0
A 12 189 265947 417.31 3117 3049 630.0
A 1 162 46895 69.6 3117 3049 630.0
B 10 16 2648185 4181.08 3337 3258 632.6
B 0 229 143168 221.17 3337 3258 632.6
B 0 205 101803 155.78 3337 3258 632.6
C 3 233 2722101 3638.97 3245 3269 747.1
C 4 254 1107690 1478.19 3245 3269 747.1
C 9 236 500366 665.33 3245 3269 747.1
D 10 70 143518 169.43 3276 3191 828.2
D 2 234 119327 140.22 3276 3191 828.2
D 13 172 101961 119.25 3276 3191 828.2

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