ASTROSAT CZTI

Data Quality Report

Orbit 39069

Creation date: 2024-06-27T21:59:59.989437
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_077T06_9000005430_39069cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39069cztM0_level2_quad_clean.evt
Size (bytes)289,923,84055,114,560
Size276.5 MB 52.6 MB
Events in quadrant A2,240,126373,499
Events in quadrant B1,516,336402,222
Events in quadrant C1,922,817367,441
Events in quadrant D4,811,512305,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085501
B064651
C075731
D0164521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30912187.052734%
B3091120.388224%
C3091882.846975%
D309161819.993530%

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 3091 3091 127 127 4.11% 4.11%
B 3091 3091 6 6 0.19% 0.19%
C 3091 3091 64 64 2.07% 2.07%
D 3091 3091 630 630 20.38% 20.38%

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 489090 6612.88 362 355 73.9
A 10 83 227973 3079.81 362 355 73.9
A 15 223 64827 872.35 362 355 73.9
B 15 85 45450 645.61 366 357 69.8
B 0 213 16252 227.57 366 357 69.8
B 0 190 9007 123.84 366 357 69.8
C 15 208 389299 4612.76 357 360 84.3
C 15 214 129217 1528.23 357 360 84.3
C 3 233 4312 46.87 357 360 84.3
D 12 235 2803992 33000.12 347 338 85.0
D 2 249 242385 2848.99 347 338 85.0
D 12 233 227802 2677.34 347 338 85.0

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