ASTROSAT CZTI

Data Quality Report

Orbit 14700

Creation date: 2024-06-27T16:58:38.416390
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/AS1G08_057T09_9000002174_14700cztM0_level2.evt modeM0/AS1G08_057T09_9000002174_14700cztM0_level2_quad_clean.evt
Size (bytes)491,584,32070,482,240
Size468.8 MB 67.2 MB
Events in quadrant A3,299,894424,187
Events in quadrant B3,261,902418,761
Events in quadrant C4,702,651408,168
Events in quadrant D3,165,012412,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139393
B0138942
C0194192
D0140932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6749681.007557%
B6749801.185361%
C6749600.889021%
D6749570.844570%

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 7685 6750 3 3 0.04% 0.04%
B 7685 6750 3 3 0.04% 0.04%
C 7685 6750 0 0 0.00% 0.00%
D 7685 6750 10 10 0.13% 0.15%

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 8 15 63601 381.14 817 799 164.8
A 12 189 47499 283.41 817 799 164.8
A 3 1 24213 142.09 817 799 164.8
B 0 189 25800 159.92 813 792 156.4
B 0 214 23687 146.41 813 792 156.4
B 0 205 19787 121.47 813 792 156.4
C 3 233 1631826 8926.23 784 787 182.7
C 3 234 12433 63.74 784 787 182.7
C 13 61 5601 26.35 784 787 182.7
D 2 14 90352 476.87 789 768 187.9
D 2 120 34881 181.59 789 768 187.9
D 2 234 25164 129.87 789 768 187.9

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