ASTROSAT CZTI

Data Quality Report

Orbit 06487

Creation date: 2024-06-27T15:08:02.305284
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/AS1G06_164T01_9000000866_06487cztM0_level2.evt modeM0/AS1G06_164T01_9000000866_06487cztM0_level2_quad_clean.evt
Size (bytes)148,098,24036,063,360
Size141.2 MB 34.4 MB
Events in quadrant A1,066,679234,252
Events in quadrant B1,134,832235,543
Events in quadrant C1,011,006236,076
Events in quadrant D1,121,141227,491

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046932
B048851
C046291
D047601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21851677.643021%
B21851677.643021%
C21851195.446224%
D21851336.086957%

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 2740 2187 1 1 0.04% 0.05%
B 2740 2187 9 9 0.33% 0.41%
C 2740 2187 0 0 0.00% 0.00%
D 2740 2187 2 2 0.07% 0.09%

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 8 15 23125 396.48 268 261 57.7
A 15 236 4303 70.09 268 261 57.7
A 10 133 3523 56.57 268 261 57.7
B 3 220 61028 1124.34 267 259 54.0
B 0 219 24013 439.49 267 259 54.0
B 12 111 5572 98.3 267 259 54.0
C 12 4 3382 51.43 257 256 60.8
C 13 61 2068 29.81 257 256 60.8
C 10 170 1260 16.52 257 256 60.8
D 8 195 88988 1351.6 259 248 65.7
D 5 97 28465 429.77 259 248 65.7
D 2 152 11269 167.86 259 248 65.7

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