ASTROSAT CZTI

Data Quality Report

Orbit 39564

Creation date: 2024-06-27T22:06:12.259017
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_018T01_9000005488_39564cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39564cztM0_level2_quad_clean.evt
Size (bytes)425,128,32084,456,000
Size405.4 MB 80.5 MB
Events in quadrant A4,219,694570,335
Events in quadrant B2,189,897600,278
Events in quadrant C4,602,391532,894
Events in quadrant D4,340,776506,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160643
B0100702
C0170222
D0164172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49491192.404526%
B4949190.383916%
C49494919.921196%
D49493386.829663%

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 7071 4950 102 102 1.44% 2.06%
B 7071 4950 6 6 0.08% 0.12%
C 7071 4950 455 455 6.43% 9.19%
D 7071 4950 304 304 4.30% 6.14%

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 15 222 1677560 15509.26 529 518 108.1
A 10 83 396192 3659.19 529 518 108.1
A 13 248 46757 427.62 529 518 108.1
B 5 172 50499 485.66 536 522 102.9
B 5 255 20194 191.17 536 522 102.9
B 12 111 12613 117.5 536 522 102.9
C 9 187 1540862 13067.47 507 511 117.9
C 15 208 856763 7263.96 507 511 117.9
C 15 214 201756 1707.25 507 511 117.9
D 12 227 1082698 8615.2 511 498 125.6
D 1 52 411305 3270.36 511 498 125.6
D 7 38 388065 3085.35 511 498 125.6

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