ASTROSAT CZTI

Data Quality Report

Orbit 21138

Creation date: 2024-06-27T18:24:02.763705
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_136T01_9000003124_21138cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21138cztM0_level2_quad_clean.evt
Size (bytes)659,229,12092,352,960
Size628.7 MB 88.1 MB
Events in quadrant A4,224,095562,949
Events in quadrant B4,313,998572,575
Events in quadrant C4,013,827559,810
Events in quadrant D6,849,069522,875

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178762
B0181402
C0173332
D0259772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83251762.114114%
B83252422.906907%
C83252352.822823%
D83256207.447447%

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 8885 8328 0 0 0.00% 0.00%
B 8885 8328 25 25 0.28% 0.30%
C 8885 8328 0 0 0.00% 0.00%
D 8885 8328 407 407 4.58% 4.89%

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 15 192 250246 1200.25 1022 1001 207.7
A 13 252 29409 136.8 1022 1001 207.7
A 13 254 11796 51.98 1022 1001 207.7
B 7 220 165830 831.83 1022 996 198.2
B 0 230 67093 333.56 1022 996 198.2
B 12 111 24495 118.59 1022 996 198.2
C 14 238 149837 638.43 984 988 233.1
C 4 223 24743 101.89 984 988 233.1
C 3 233 6909 25.4 984 988 233.1
D 1 52 2089457 8745.09 976 947 238.8
D 5 222 411481 1719.0 976 947 238.8
D 13 174 153078 637.01 976 947 238.8

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