ASTROSAT CZTI

Data Quality Report

Orbit 37521

Creation date: 2024-06-27T21:41:02.909991
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/AS1A09_061T01_9000005330_37521cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37521cztM0_level2_quad_clean.evt
Size (bytes)452,537,28090,578,880
Size431.6 MB 86.4 MB
Events in quadrant A2,737,807608,730
Events in quadrant B2,957,971625,667
Events in quadrant C3,000,450614,605
Events in quadrant D4,672,862546,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111973
B0119582
C0118722
D0172832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4951180.363563%
B49511703.433650%
C49511312.645930%
D495171414.421329%

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 7074 4952 12 12 0.17% 0.24%
B 7074 4952 132 132 1.87% 2.67%
C 7074 4952 114 114 1.61% 2.30%
D 7074 4952 721 721 10.19% 14.56%

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 10 83 283593 2312.12 600 589 122.4
A 12 227 35857 288.14 600 589 122.4
A 6 10 28371 226.98 600 589 122.4
B 5 172 330725 2904.71 595 581 113.7
B 5 255 66579 580.67 595 581 113.7
B 0 229 51325 446.46 595 581 113.7
C 14 254 244039 1756.82 590 595 138.6
C 15 214 208607 1501.12 590 595 138.6
C 0 10 108143 776.12 590 595 138.6
D 12 227 1338285 9904.28 546 531 135.1
D 2 249 577334 4270.46 546 531 135.1
D 13 249 238995 1765.51 546 531 135.1

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