ASTROSAT CZTI

Data Quality Report

Orbit 14868

Creation date: 2024-06-27T17:00:40.380020
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_218T01_9000002194_14868cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14868cztM0_level2_quad_clean.evt
Size (bytes)194,644,80051,693,120
Size185.6 MB 49.3 MB
Events in quadrant A1,337,421353,411
Events in quadrant B1,478,737347,510
Events in quadrant C1,294,641343,293
Events in quadrant D1,605,088334,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055121
B060391
C054381
D065121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2604130.499232%
B2604250.960061%
C260450.192012%
D2604471.804916%

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 2605 2605 0 0 0.00% 0.00%
B 2605 2605 1 1 0.04% 0.04%
C 2605 2605 0 0 0.00% 0.00%
D 2605 2605 10 10 0.38% 0.38%

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 15 239 41066 608.43 325 319 67.0
A 12 189 39287 581.87 325 319 67.0
A 0 226 2981 39.75 325 319 67.0
B 0 219 133299 2149.16 317 309 61.9
B 0 230 19592 311.62 317 309 61.9
B 5 236 19290 306.74 317 309 61.9
C 3 233 93511 1287.42 307 308 72.4
C 6 96 2387 28.72 307 308 72.4
C 13 61 2212 26.3 307 308 72.4
D 13 104 317810 3707.96 310 303 85.6
D 7 38 30917 357.52 310 303 85.6
D 2 120 28240 326.26 310 303 85.6

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