ASTROSAT CZTI

Data Quality Report

Orbit 29158

Creation date: 2024-06-27T20:00:56.602655
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_099T01_9000004184_29158cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29158cztM0_level2_quad_clean.evt
Size (bytes)630,072,000122,120,640
Size600.9 MB 116.5 MB
Events in quadrant A4,157,107787,452
Events in quadrant B4,330,638802,781
Events in quadrant C4,261,007771,396
Events in quadrant D5,750,239740,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179682
B0183352
C0180922
D0229812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86011081.255668%
B86021822.115787%
C86021992.313415%
D86023263.789816%

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 8971 8605 0 0 0.00% 0.00%
B 8972 8606 2 2 0.02% 0.02%
C 8972 8606 0 0 0.00% 0.00%
D 8972 8606 178 178 1.98% 2.07%

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 15244 64.89 1076 1051 218.7
A 3 137 11242 46.59 1076 1051 218.7
A 0 226 9141 36.98 1076 1051 218.7
B 0 183 56308 263.97 1070 1042 209.4
B 0 189 33643 155.71 1070 1042 209.4
B 12 111 26289 120.59 1070 1042 209.4
C 14 238 170799 688.68 1037 1045 246.5
C 3 233 23381 90.62 1037 1045 246.5
C 2 114 20300 78.12 1037 1045 246.5
D 1 52 1375957 5560.2 1031 1004 247.3
D 8 195 389564 1571.31 1031 1004 247.3
D 2 250 44213 174.73 1031 1004 247.3

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