ASTROSAT CZTI

Data Quality Report

Orbit 05557

Creation date: 2024-06-27T14:56:38.313602
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/AS1A02_086T01_9000000714_05557cztM0_level2.evt modeM0/AS1A02_086T01_9000000714_05557cztM0_level2_quad_clean.evt
Size (bytes)1,542,905,280255,960,000
Size1.4 GB 244.1 MB
Events in quadrant A10,194,5841,627,390
Events in quadrant B12,586,6211,614,768
Events in quadrant C9,129,6141,621,522
Events in quadrant D13,474,8671,519,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437585
B0505284
C0410434
D0535734

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198714612.319964%
B198715952.994313%
C198711810.910875%
D1987110305.183433%

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 24326 19874 143 143 0.59% 0.72%
B 24326 19875 240 240 0.99% 1.21%
C 24326 19875 3 3 0.01% 0.02%
D 24326 19875 621 621 2.55% 3.12%

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 0 50 511766 1049.08 2394 2346 485.6
A 15 174 411966 843.56 2394 2346 485.6
A 0 226 25076 46.81 2394 2346 485.6
B 15 204 1466598 3228.98 2394 2339 453.5
B 10 16 1182031 2601.45 2394 2339 453.5
B 11 51 150358 326.41 2394 2339 453.5
C 1 16 83874 154.73 2297 2307 527.1
C 9 16 28734 50.13 2297 2307 527.1
C 5 250 21200 35.84 2297 2307 527.1
D 2 63 2006966 3650.86 2278 2208 549.1
D 2 152 1067449 1939.91 2278 2208 549.1
D 2 33 430029 779.1 2278 2208 549.1

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