ASTROSAT CZTI

Data Quality Report

Orbit 20096

Creation date: 2024-06-27T18:11:15.299520
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/AS1A05_180T01_9000002992_20096cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20096cztM0_level2_quad_clean.evt
Size (bytes)1,194,546,240190,327,680
Size1.1 GB 181.5 MB
Events in quadrant A9,263,4791,223,614
Events in quadrant B9,380,4261,250,890
Events in quadrant C7,681,8571,213,836
Events in quadrant D8,976,0401,179,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359162
B0365532
C0310552
D0352662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1296111578.926780%
B1296112209.412854%
C129626535.037803%
D129617996.164648%

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 13476 12964 651 651 4.83% 5.02%
B 13476 12964 619 619 4.59% 4.77%
C 13477 12965 295 295 2.19% 2.28%
D 13476 12963 488 488 3.62% 3.76%

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 14 238 2953903 9364.24 1557 1527 315.3
A 14 254 226438 713.36 1557 1527 315.3
A 9 143 51556 158.68 1557 1527 315.3
B 10 245 3087226 10468.89 1546 1506 294.8
B 7 220 45326 148.67 1546 1506 294.8
B 4 80 43701 143.15 1546 1506 294.8
C 4 254 1452838 4051.09 1529 1544 358.2
C 14 238 240093 665.88 1529 1544 358.2
C 3 233 31984 84.97 1529 1544 358.2
D 1 52 2486512 6677.22 1530 1489 372.2
D 12 218 390376 1044.93 1530 1489 372.2
D 2 184 162314 432.13 1530 1489 372.2

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