ASTROSAT CZTI

Data Quality Report

Orbit 15746

Creation date: 2024-06-27T17:12:56.851426
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/AS1T02_095T01_9000002330_15746cztM0_level2.evt modeM0/AS1T02_095T01_9000002330_15746cztM0_level2_quad_clean.evt
Size (bytes)181,938,24039,977,280
Size173.5 MB 38.1 MB
Events in quadrant A1,273,179263,703
Events in quadrant B1,441,263268,645
Events in quadrant C1,283,782261,105
Events in quadrant D1,353,716251,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053671
B058891
C053241
D056361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2301582.520643%
B2301582.520643%
C2301823.563668%
D2301723.129074%

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 3427 2303 0 0 0.00% 0.00%
B 3427 2303 5 5 0.15% 0.22%
C 3427 2303 0 0 0.00% 0.00%
D 3427 2303 1 1 0.03% 0.04%

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 2 4719 63.48 329 324 69.2
A 0 226 2849 36.47 329 324 69.2
A 12 194 2531 31.88 329 324 69.2
B 4 251 165055 2654.5 318 311 62.1
B 4 216 10929 171.09 318 311 62.1
B 12 111 6507 99.84 318 311 62.1
C 14 238 48038 616.71 315 318 77.4
C 3 233 4507 54.14 315 318 77.4
C 13 61 2194 24.24 315 318 77.4
D 1 52 94976 1137.51 330 321 83.2
D 2 234 9011 104.43 330 321 83.2
D 10 70 4939 55.5 330 321 83.2

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