ASTROSAT CZTI

Data Quality Report

Orbit 30957

Creation date: 2024-06-27T20:21:35.145160
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/AS1A10_058T10_9000004472_30957cztM0_level2.evt modeM0/AS1A10_058T10_9000004472_30957cztM0_level2_quad_clean.evt
Size (bytes)1,825,358,400280,779,840
Size1.7 GB 267.8 MB
Events in quadrant A10,769,2511,779,742
Events in quadrant B17,226,8341,776,834
Events in quadrant C12,366,3121,716,255
Events in quadrant D13,414,8781,694,767

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460523
B0679863
C0505933
D0538733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04520
B04520
C04520
D04520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223103981.783953%
B223106422.877633%
C223108643.872703%
D223106312.828328%

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 23645 22312 0 0 0.00% 0.00%
B 23645 22310 4 4 0.02% 0.02%
C 23645 22311 28 28 0.12% 0.13%
D 23645 22313 328 328 1.39% 1.47%

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 13 254 39417 65.77 2784 2721 558.0
A 3 137 28335 45.91 2784 2721 558.0
A 3 243 26178 42.04 2784 2721 558.0
B 6 159 6117609 11586.83 2741 2669 527.7
B 0 190 162049 302.0 2741 2669 527.7
B 0 183 79398 145.39 2741 2669 527.7
C 3 233 815837 1311.79 2653 2675 619.9
C 0 10 530222 851.04 2653 2675 619.9
C 14 238 505250 810.75 2653 2675 619.9
D 8 195 1302501 1955.67 2688 2623 664.7
D 2 250 794525 1191.42 2688 2623 664.7
D 15 47 747756 1121.06 2688 2623 664.7

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