ASTROSAT CZTI

Data Quality Report

Orbit 34291

Creation date: 2022-01-31T01:48:16.071230
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/AS1T04_086T01_9000004890_34291cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34291cztM0_level2_quad_clean.evt
Size (bytes)453,617,28070,364,160
Size432.6 MB 67.1 MB
Events in quadrant A2,494,659446,448
Events in quadrant B3,246,009457,070
Events in quadrant C2,808,065454,813
Events in quadrant D4,849,235420,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104503
B0127922
C0111412
D0179812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5022140.278773%
B5022881.752290%
C5022400.796495%
D50222104.181601%

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 7056 5023 5 5 0.07% 0.10%
B 7056 5023 65 65 0.92% 1.29%
C 7056 5023 28 28 0.40% 0.56%
D 7056 5023 203 203 2.88% 4.04%

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 9 143 31220 247.36 622 612 123.7
A 10 83 28559 225.86 622 612 123.7
A 7 16 12760 98.18 622 612 123.7
B 5 172 369975 3179.62 627 613 116.2
B 4 251 147255 1262.35 627 613 116.2
B 15 222 95271 814.85 627 613 116.2
C 15 214 220625 1542.01 623 629 142.7
C 15 159 70487 489.65 623 629 142.7
C 0 10 60520 419.79 623 629 142.7
D 8 195 898957 5757.72 607 597 156.0
D 7 223 869704 5570.23 607 597 156.0
D 12 235 412238 2638.27 607 597 156.0

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