ASTROSAT CZTI

Data Quality Report

Orbit 42390

Creation date: 2024-06-27T22:39:44.285835
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/AS1C06_010T01_9000005800_42390cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42390cztM0_level2_quad_clean.evt
Size (bytes)339,577,92082,172,160
Size323.8 MB 78.4 MB
Events in quadrant A2,853,887568,084
Events in quadrant B2,249,154567,758
Events in quadrant C3,367,832516,367
Events in quadrant D3,704,966481,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115722
B0103673
C0134092
D0145162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5057380.751434%
B5056120.237342%
C50563717.337816%
D50564248.386076%

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 7000 5058 25 25 0.36% 0.49%
B 6999 5057 4 4 0.06% 0.08%
C 6999 5057 287 287 4.10% 5.68%
D 6999 5057 413 413 5.90% 8.17%

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 599240 5445.75 536 526 109.9
A 14 223 134824 1221.54 536 526 109.9
A 15 235 14731 129.2 536 526 109.9
B 0 245 44783 436.07 532 518 101.5
B 0 230 25083 242.0 532 518 101.5
B 5 255 21319 204.92 532 518 101.5
C 4 254 1089498 9189.43 505 507 118.5
C 15 214 205693 1731.46 505 507 118.5
C 14 254 85547 717.61 505 507 118.5
D 2 16 907097 7068.25 520 504 128.3
D 1 52 288146 2242.6 520 504 128.3
D 12 233 142886 1110.08 520 504 128.3

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