ASTROSAT CZTI

Data Quality Report

Orbit 26356

Creation date: 2024-06-27T19:27:48.928932
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_088T01_9000003808_26356cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26356cztM0_level2_quad_clean.evt
Size (bytes)198,417,60031,495,680
Size189.2 MB 30.0 MB
Events in quadrant A1,299,794197,528
Events in quadrant B1,307,655204,009
Events in quadrant C1,767,770191,196
Events in quadrant D1,474,047192,966

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053910
B053500
C068580
D058840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2326401.719690%
B2326502.149613%
C23261285.503009%
D2326582.493551%

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 3531 2327 5 5 0.14% 0.21%
B 3531 2327 4 4 0.11% 0.17%
C 3531 2327 18 18 0.51% 0.77%
D 3531 2327 21 21 0.59% 0.90%

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 0 13 38004 572.03 327 320 65.9
A 13 254 3760 52.22 327 320 65.9
A 0 226 2919 39.45 327 320 65.9
B 5 172 29921 472.79 325 318 62.6
B 0 230 12558 195.49 325 318 62.6
B 12 111 6838 104.13 325 318 62.6
C 3 233 474990 6630.66 308 309 71.6
C 14 238 49867 692.25 308 309 71.6
C 2 16 26918 371.69 308 309 71.6
D 1 52 154692 2034.07 315 306 75.9
D 7 80 117833 1548.45 315 306 75.9
D 2 234 10158 129.8 315 306 75.9

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