ASTROSAT CZTI

Data Quality Report

Orbit 39841

Creation date: 2024-06-27T22:09:25.643336
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/AS1A12_022T01_9000005498_39841cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39841cztM0_level2_quad_clean.evt
Size (bytes)1,136,966,400193,429,440
Size1.1 GB 184.5 MB
Events in quadrant A6,999,6021,367,513
Events in quadrant B7,819,8941,334,364
Events in quadrant C18,503,7211,052,862
Events in quadrant D7,765,4301,208,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028990233
B032483240
C064984974
D032859650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0592
B0591
C0592
D0591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02684
B02662
C02684
D02673

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12923610.472027%
B129345524.267821%
C12909297123.014951%
D129203072.376161%

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 18841 12949 31 31 0.16% 0.24%
B 18848 12955 432 432 2.29% 3.33%
C 18843 12943 3002 3002 15.93% 23.19%
D 18839 12949 268 268 1.42% 2.07%

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 10 83 1010343 3531.25 1418 1392 285.7
A 13 248 366566 1278.08 1418 1392 285.7
A 2 79 110111 380.51 1418 1392 285.7
B 5 32 1685278 6386.48 1387 1347 263.7
B 5 172 423209 1599.96 1387 1347 263.7
B 0 230 75037 279.48 1387 1347 263.7
C 9 187 9601210 32884.35 1269 1277 291.9
C 15 208 3309773 11333.18 1269 1277 291.9
C 15 214 499245 1705.78 1269 1277 291.9
D 12 233 877653 2632.99 1372 1332 332.8
D 12 227 593309 1778.65 1372 1332 332.8
D 1 52 247417 739.39 1372 1332 332.8

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