ASTROSAT CZTI

Data Quality Report

Orbit 10979

Creation date: 2024-06-27T16:06:29.083297
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/AS1G08_027T06_9000001594_10979cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10979cztM0_level2_quad_clean.evt
Size (bytes)1,093,141,440144,195,840
Size1.0 GB 137.5 MB
Events in quadrant A11,188,708887,777
Events in quadrant B8,910,097888,105
Events in quadrant C5,188,328915,007
Events in quadrant D7,019,691856,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412074
B0342513
C0239643
D0289623

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11830156913.262891%
B1183010939.239222%
C11830240.202874%
D118302502.113271%

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 13545 11833 1253 1253 9.25% 10.59%
B 13545 11833 682 682 5.04% 5.76%
C 13545 11833 0 0 0.00% 0.00%
D 13545 11833 211 211 1.56% 1.78%

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 15 223 3038810 11473.06 1300 1272 264.8
A 8 5 1748196 6598.29 1300 1272 264.8
A 15 239 1115893 4210.03 1300 1272 264.8
B 4 239 3359620 13077.57 1340 1311 256.8
B 0 214 100823 387.51 1340 1311 256.8
B 15 36 45241 171.07 1340 1311 256.8
C 13 61 10019 28.1 1328 1333 309.1
C 12 4 5868 14.67 1328 1333 309.1
C 8 222 4913 11.58 1328 1333 309.1
D 1 52 1289973 4000.79 1311 1271 322.1
D 8 195 374653 1159.17 1311 1271 322.1
D 13 104 131094 403.04 1311 1271 322.1

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