ASTROSAT CZTI

Data Quality Report

Orbit 26602

Creation date: 2024-06-27T19:30:52.483818
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/AS1A09_095T02_9000003846_26602cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26602cztM0_level2_quad_clean.evt
Size (bytes)2,656,054,080298,252,800
Size2.5 GB 284.4 MB
Events in quadrant A9,875,4592,144,246
Events in quadrant B13,839,2352,157,434
Events in quadrant C12,185,7842,103,082
Events in quadrant D43,180,5831,231,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422030
B0545880
C0491650
D01419660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202141520.751954%
B202158834.368044%
C202156183.057136%
D202151458572.149394%

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 23923 20213 37 37 0.15% 0.18%
B 23924 20215 441 441 1.84% 2.18%
C 23924 20214 157 157 0.66% 0.78%
D 23924 20214 14188 14188 59.30% 70.19%

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 12 96 209855 418.25 2490 2436 495.9
A 5 168 47306 90.48 2490 2436 495.9
A 13 254 32297 60.21 2490 2436 495.9
B 3 64 2667251 5893.22 2432 2378 452.2
B 0 189 1494276 3299.25 2432 2378 452.2
B 5 172 69321 148.04 2432 2378 452.2
C 3 233 2124128 3863.21 2386 2404 549.2
C 14 238 384375 695.49 2386 2404 549.2
C 15 208 363047 656.65 2386 2404 549.2
D 1 52 33620880 99131.38 1450 1417 339.1
D 7 80 3448881 10165.3 1450 1417 339.1
D 2 250 391670 1150.71 1450 1417 339.1

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