ASTROSAT CZTI

Data Quality Report

Orbit 26754

Creation date: 2024-06-27T19:32:28.477227
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/AS1T03_223T01_9000003850_26754cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26754cztM0_level2_quad_clean.evt
Size (bytes)1,051,606,08067,026,240
Size1002.9 MB 63.9 MB
Events in quadrant A4,505,445482,286
Events in quadrant B16,618,537102,691
Events in quadrant C3,545,044477,502
Events in quadrant D6,688,706459,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181180
B0542820
C0150290
D0249820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72672122.917297%
B7266620685.411506%
C72661231.692816%
D7266100113.776493%

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 7537 7268 38 38 0.50% 0.52%
B 7535 7265 5787 5787 76.80% 79.66%
C 7536 7267 1 1 0.01% 0.01%
D 7536 7267 683 683 9.06% 9.40%

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 1041810 5749.12 895 876 181.1
A 13 254 11510 58.73 895 876 181.1
A 3 137 8611 42.72 895 876 181.1
B 0 189 15397075 257571.91 307 299 59.8
B 10 246 14100 230.88 307 299 59.8
B 12 111 6725 107.5 307 299 59.8
C 14 238 136489 676.68 858 860 200.4
C 2 16 46877 229.59 858 860 200.4
C 10 22 8859 39.91 858 860 200.4
D 7 80 2376720 11160.98 820 800 212.9
D 1 52 775969 3641.39 820 800 212.9
D 2 250 274772 1286.99 820 800 212.9

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