ASTROSAT CZTI

Data Quality Report

Orbit 43816

Creation date: 2024-06-27T22:56:08.262528
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/AS1A13_018T01_9000005906_43816cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43816cztM0_level2_quad_clean.evt
Size (bytes)1,357,125,120169,159,680
Size1.3 GB 161.3 MB
Events in quadrant A13,361,8711,106,609
Events in quadrant B8,429,5301,287,150
Events in quadrant C9,928,7921,137,949
Events in quadrant D17,582,392752,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484762
B0332022
C0379102
D0605192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12098195116.126633%
B120986595.447181%
C12098147612.200364%
D12099450237.209687%

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 13408 12099 1572 1572 11.72% 12.99%
B 13408 12099 355 355 2.65% 2.93%
C 13408 12099 1341 1341 10.00% 11.08%
D 13409 12099 4098 4098 30.56% 33.87%

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 14 254 3426077 12857.69 1279 1253 266.4
A 15 223 3011558 11301.48 1279 1253 266.4
A 10 83 1595501 5985.23 1279 1253 266.4
B 5 235 1605553 6067.27 1354 1313 264.4
B 0 200 387141 1459.21 1354 1313 264.4
B 5 172 377389 1422.33 1354 1313 264.4
C 15 174 3559169 11543.79 1310 1317 308.2
C 15 158 749739 2428.33 1310 1317 308.2
C 3 233 171031 550.65 1310 1317 308.2
D 12 33 6261869 22566.91 1080 1049 277.4
D 10 102 4501756 16222.64 1080 1049 277.4
D 5 235 664528 2391.49 1080 1049 277.4

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